Organic electroluminescent device and electronic apparatus

ABSTRACT

An organic electroluminescent device includes a first transistor, a power supply line layer connected to one current terminal of the first transistor, a capacitive element including a first capacitive electrode connected to a gate of the first transistor, and a second capacitive electrode, a signal line, and a pixel electrode connected to the other current terminal of the first transistor, the first capacitive electrode is provided on a layer over the gate of the first transistor, and the power supply line layer is provided on a layer between the first capacitive electrode and the signal line.

CROSS REFERENCE

This application Divisional application of U.S. patent application Ser.No. 16/220,449, filed Dec. 14, 2018, which is a Continuation Applicationof U.S. patent application Ser. No. 15/805,863, filed Nov. 7, 2017,which is a Continuation Application of U.S. patent application Ser. No.15/455,943, filed Mar. 10, 2017, which is a Continuation Application ofU.S. patent application Ser. No. 14/831,522, filed Aug. 20, 2015, whichclaims the benefit of priority of Japanese Patent Application No.2014-179300, filed on Sep. 3, 2014. The entire disclosures of theaforementioned applications are expressly incorporated by referenceherein.

BACKGROUND 1. Technical Field

The present invention relates to an organic electroluminescent deviceusing a luminescent material of an organic EL material.

2. Related Art

For example, a light emitting device in which light emitting elementsusing an organic EL material are arranged in a plane shape on asubstrate has been conventionally proposed as a display device forvarious electronic apparatuses. JP-A-2007-226184 discloses a technologyfor forming a capacitive electrode constituting a capacitive element ona layer on which a scanning line, a gate electrode or the like isformed.

However, when a capacitive electrode is formed on a layer on which ascanning line and a gate electrode are formed as disclosed inJP-A-2007-226184, it is necessary to form the capacitive electrode whileavoiding a control line such as the scanning line, and the gateelectrode, and it is difficult to secure capacitance of the capacitiveelement.

SUMMARY

An advantage of some aspects of the invention is to provide an organicelectroluminescent device and an electronic apparatus having a pixelstructure for high-density pixels by effectively utilizing a layer overa gate electrode.

According to a first aspect of the invention, an organicelectroluminescent device includes a first transistor; a power supplyline layer connected to one current terminal of the first transistor; acapacitive element including a first capacitive electrode connected to agate of the first transistor, and a second capacitive electrode; asecond transistor; a scanning line connected to a gate of the secondtransistor; a signal line connected to one current terminal of thesecond transistor; and a pixel electrode connected to the other currentterminal of the first transistor, in which the first capacitiveelectrode is provided on a layer over the gate of the first transistor,and the power supply line layer is provided on a layer between the firstcapacitive electrode and the signal line. In the above configuration,since the power supply line layer is arranged between the firstcapacitive electrode and the signal line, coupling between the signalline and the first capacitive electrode is suppressed due to a shieldingeffect of the power supply line layer.

In the aspect of the invention, it is preferable that the power supplyline layer is provided on a layer between the first capacitive electrodeand the scanning line. Therefore, coupling between the scanning line, aswell as the signal line, and the first capacitive electrode issuppressed due to a shielding effect of the power supply line layer.

In the aspect of the invention, it is preferable that the power supplyline layer is provided on a layer between the first capacitive electrodeand the pixel electrode. Therefore, coupling between the pixel electrodeand the first capacitive electrode is suppressed due to a shieldingeffect of the power supply line layer.

In the aspect of the invention, it is preferable that the organicelectroluminescent device further includes a plurality of conductionholes penetrating respective layers from a layer on which the currentterminal of the first transistor is formed to a layer on which the pixelelectrode has been formed, and a plurality of relay electrodes connectedto the plurality of respective conduction holes, in which the othercurrent terminal of the first transistor is connected to the pixelelectrode by the plurality of conduction holes and the plurality ofrelay electrodes. Therefore, it is possible to achieve conductionbetween the first transistor and the pixel electrode with lessresistance, as compared to a case in which the pixel electrode extendsto the layer on which the other current terminal of the first transistorhas been formed to achieve the conduction.

In the aspect of the invention, it is preferable that the power supplyline layer includes a first power supply line layer, and a second powersupply line layer, the first capacitive electrode is provided betweenthe first power supply line layer and the second power supply linelayer, and an inter-power supply conduction portion connecting the firstpower supply line layer to the second power supply line layer isprovided to extend in at least one of an extending direction of thesignal line and an extending direction of the scanning line. Therefore,coupling between the first capacitive electrode in one pixel and thefirst capacitive electrode in a pixel adjacent to the one pixel issuppressed due to a shielding effect of the inter-power supplyconduction portion connecting the first power supply line layer to thesecond power supply line layer.

In the aspect of the invention, it is preferable that the secondcapacitive electrode is electrically connected to the power supply linelayer, and is formed on a layer under the power supply line layer.Therefore, since the second capacitive electrode connected to the powersupply line layer is formed on the layer under the power supply linelayer, it is possible to obtain a smaller thickness of the electrode andto easily obtain greater capacitance of the capacitive element, ascompared to a case in which the power supply line layer is used as thecapacitive electrode of the capacitive element. Further, a degree offreedom of the arrangement of the capacitive electrode increases.

In the aspect of the invention, the organic electroluminescent devicefurther includes gate wiring connected to the gate of the firsttransistor, and the first capacitive electrode is electrically connectedto the gate wiring and is formed on a layer under the gate wiring.Therefore, since the first capacitive electrode connected to the gatewiring is formed on a layer under the gate wiring, it is possible toobtain a smaller thickness of the electrode, and to easily obtaingreater capacitance of the capacitive element, as compared to a case inwhich the gate wiring is used as the capacitive electrode of thecapacitive element. Further, a degree of freedom of the arrangement ofthe capacitive electrode increases.

In the aspect of the invention, it is preferable that the capacitiveelement and the second transistor are arranged to overlap each other ina plan view. Therefore, the capacitance of the capacitive element can besecured in a planar direction, and miniaturization of the pixel can beachieved.

In the aspect of the invention, it is preferable that the capacitiveelement and the first transistor are arranged to overlap each other in aplan view. Therefore, the capacitance of the capacitive element can besecured in a planar direction, and miniaturization of the pixel can beachieved.

In the aspect of the invention, the organic electroluminescent devicefurther includes a third transistor connected between the other currentterminal of the first transistor and the pixel electrode, in which thecapacitive element and the third transistor are arranged to overlap eachother in a plan view. Therefore, the capacitance of the capacitiveelement can be secured in a planar direction, and miniaturization of thepixel can be achieved.

In the aspect of the invention, it is preferable that the organicelectroluminescent device further includes a fourth transistor havingone current terminal connected to a connection portion with the othercurrent terminal of the first transistor and one current terminal of thethird transistor, in which the capacitive element and the fourthtransistor are arranged to overlap each other in a plan view. Therefore,the capacitance of the capacitive element can be secured in a planardirection, and miniaturization of the pixel can be achieved.

The organic electroluminescent device according to each aspect describedabove is used, for example, as a display device for various electronicapparatuses. Specifically, a head mounted display device, an electronicviewfinder of an imaging device, or the like can be illustrated as apreferred example of the electronic apparatus of the invention, but thescope of the invention is not limited to the above example.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be described with reference to the accompanyingdrawings, wherein like numbers reference like elements.

FIG. 1 is a plan view of a light emitting device of a first embodimentof the invention.

FIG. 2 is a circuit diagram of a pixel.

FIG. 3 is a circuit diagram of a pixel.

FIG. 4 is a sectional view of a light emitting device.

FIG. 5 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 6 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 7 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 8 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 9 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 10 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 11 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 12 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 13 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 14 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 15 is an illustrative diagram of each element that is formed on asubstrate in a modification example of the first embodiment.

FIG. 16 is an illustrative diagram of each element that is formed on asubstrate in a modification example of the first embodiment.

FIG. 17 is a sectional view of a light emitting device according to asecond embodiment of the invention.

FIG. 18 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 19 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 20 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 21 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 22 is a sectional view of a light emitting device according to athird embodiment of the invention.

FIG. 23 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 24 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 25 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 26 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 27 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 28 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 29 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 30 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 31 is a sectional view of a light emitting device in a fourthembodiment of the invention.

FIG. 32 is an illustrative diagram of each element that is formed on asubstrate.

FIG. 33 is an illustrative diagram of each element that is formed on asubstrate.

FIG. 34 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 35 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 36 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 37 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 38 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 39 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 40 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 41 is a sectional view of a light emitting device according to afifth embodiment of the invention.

FIG. 42 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 43 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 44 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 45 is an illustrative diagram of each element that is formed on asubstrate.

FIG. 46 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 47 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 48 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 49 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 50 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 51 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 52 is a circuit diagram of a pixel of a light emitting device in asixth embodiment of the invention.

FIG. 53 is a sectional view of a light emitting device.

FIG. 54 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 55 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 56 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 57 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 58 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 59 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 60 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 61 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 62 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 63 is a sectional view of a light emitting device in a seventhembodiment of the invention.

FIG. 64 is an illustrative diagram of each element that is formed on asubstrate.

FIG. 65 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 66 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 67 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 68 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 69 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 70 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 71 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 72 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 73 is a sectional view of a light emitting device according to aneighth embodiment of the invention.

FIG. 74 is an illustrative diagram of each element that is formed on asubstrate.

FIG. 75 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 76 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 77 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 78 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 79 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 80 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 81 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 82 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 83 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 84 is a sectional view of a light emitting device in a ninthembodiment of the invention.

FIG. 85 is an illustrative diagram of each element that is formed on asubstrate.

FIG. 86 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 87 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 88 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 89 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 90 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 91 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 92 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 93 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 94 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 95 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 96 is a sectional view of a light emitting device in a tenthembodiment of the invention.

FIG. 97 is an illustrative diagram of each element that is formed on asubstrate.

FIG. 98 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 99 is an illustrative diagram of each element that is formed on thesubstrate.

FIG. 100 is an illustrative diagram of each element that is formed onthe substrate.

FIG. 101 is an illustrative diagram of each element that is formed onthe substrate.

FIG. 102 is an illustrative diagram of each element that is formed onthe substrate.

FIG. 103 is an illustrative diagram of each element that is formed onthe substrate.

FIG. 104 is an illustrative diagram of each element that is formed onthe substrate.

FIG. 105 is an illustrative diagram of each element that is formed onthe substrate.

FIG. 106 is an illustrative diagram of each element that is formed onthe substrate.

FIG. 107 is an illustrative diagram of each element that is formed onthe substrate.

FIG. 108 is a schematic diagram which is an example of a head-mounteddisplay device of an electronic apparatus.

DESCRIPTION OF EXEMPLARY EMBODIMENTS First Embodiment

FIG. 1 is a plan view of an organic electroluminescent device 100according to a first embodiment of the invention. The organicelectroluminescent device 100 of the first embodiment is an organic ELdevice in which a light emitting device using an organic EL material hasbeen formed on a surface of a substrate 10. The substrate 10 is aplate-shaped member (semiconductor substrate) formed of a semiconductormaterial such as silicon, and is used as a substrate (base) on which aplurality of light emitting elements is formed. As illustrated in FIG.1, the surface of the substrate 10 is divided into a first area 12 and asecond area 14. The first area 12 is a rectangular area, and the secondarea 14 is a rectangular frame-shaped area that surrounds the first area12.

In the first area 12, a plurality of scanning lines 22 extending in an Xdirection, and a plurality of the signal lines 26 extending in a Ydirection crossing the X direction are formed. A pixel P (Pd or Pe) isformed corresponding to each of intersections of the plurality ofscanning lines 22 and the plurality of the signal lines 26. Therefore, aplurality of pixels P are arranged in a matrix shape in the X and Ydirections.

A driving circuit 30, a plurality of mounting terminals 36, and a guardring 38 are disposed in the second area 14. The driving circuit 30 is acircuit that drives each pixel P, and includes two scanning line drivingcircuits 32 disposed in respective positions with the first area 12interposed therebetween in the X direction, and a signal line drivingcircuit 34 disposed in an area extending in the X direction in thesecond area 14. The plurality of mounting terminals 36 are formed in anarea on the side opposite to the first area 12 with the signal linedriving circuit 34 interposed therebetween, and is electricallyconnected to an external circuit (for example, an electronic circuitmounted on a wiring board) such as a control circuit or a power supplycircuit via a flexible wiring board (not illustrated) that is bonded tothe substrate 10.

For the organic electroluminescent device 100 of the first embodiment, aplurality of organic electroluminescent devices are collectively formedthrough cutting (scribing) of an original substrate having a sizecorresponding to a plurality of substrates 10. The guard ring 38 in FIG.1 prevents the driving circuit 30 or the pixel P from being affected byimpact or static electricity at the time of cutting of the originalsubstrate or moisture from intruding from an end surface of eachsubstrate 10 (a cut surface of the original substrate). As illustratedin FIG. 1, the guard ring 38 is formed in an annular shape (rectangularframe) that surrounds the driving circuit 30, the plurality of mountingterminals 36, and the first area 12.

The first area 12 in FIG. 1 is divided into a display area 16 and aperipheral area 18. The display area 16 is an area in which an image isactually displayed by the driving of each pixel P. The peripheral area18 is a rectangular frame-shaped area that surrounds the display area16. In the peripheral area 18, a pixel P (hereinafter referred to as a“dummy pixel Pd”) that has a structure similar to each pixel P in thedisplay area 16, but does not actually contribute to displaying of theimage is arranged. From the viewpoint of clarifying of distinction inrepresentation from the dummy pixel Pd in the peripheral area 18, in thefollowing description, the pixel P in the display area 16 may beconveniently indicated by a “display pixel Pe”. The display pixel Pe isan element that is a minimum unit of emission.

FIG. 2 is a circuit diagram of each display pixel Pe located in thedisplay area 16. As illustrated in FIG. 2, the display pixel Pe includesa light emitting element 45, a driving transistor Tdr, a selectiontransistor Tsl, a capacitive element C, an emission control transistorTel, and a compensation transistor Temp. Further, in the presentembodiment, while each transistor T (Tdr, Tel, Tsl, or Temp) of thedisplay pixel Pe is a P-channel type, an N-channel type transistor canalso be used.

The light emitting element 45 is an electro-optical element in which alight emitting function layer 46 including a light emitting layer of anorganic EL material is interposed between a first electrode (positiveelectrode) E1 and a second electrode (negative electrode) E2. The firstelectrode E1 is formed separately in each display pixel Pe, and thesecond electrode E2 is continuous over a plurality of pixels P. As isunderstood from FIG. 2, the light emitting element 45 is arranged on apath connecting a first power supply conductor 41 to a second powersupply conductor 42. The first power supply conductor 41 is a powersupply wiring to which a power supply potential Vel on a high potentialside is supplied, and the second power supply conductor 42 is a powersupply wiring to which a power supply potential (for example, groundpotential) Vet on a low potential side is supplied. A circuit of thedisplay pixel Pe in this embodiment can be driven using any one of aso-called coupling driving scheme and a so-called current programmingscheme. First, driving using coupling driving scheme will be described.

The emission control transistor Tel functions as a switch that controlsa conduction state (conduction/non-conduction) between the otherterminal (drain or source) of a pair of current terminals of the drivingtransistor Tdr and the first electrode E1 of the light emitting element45. The driving transistor Tdr generates a driving current having anamount of current corresponding to a voltage between the gate and thesource. In a state in which the emission control transistor Tel iscontrolled to be in an ON state, the driving current is supplied fromthe driving transistor Tdr to the light emitting element 45 via theemission control transistor Tel, and thus, the light emitting element 45emits light with a luminance according to the amount of the drivingcurrent, and in a state in which the emission control transistor Tel iscontrolled to be in an OFF state, supplying of the driving current tothe light emitting element 45 is blocked, and thus, the light emittingelement 45 is turned off. The gate of the emission control transistorTel is connected to a control line 28.

The compensation transistor Temp has a function of compensating for avariation in a threshold voltage of the driving transistor Tdr. When theemission control transistor Tel is in an OFF state, and the selectiontransistor Tsl and the driving transistor Tdr are controlled to be in anON state, and if the compensation transistor Temp is controlled to be inan ON state, the gate potential and the drain or source potential of thedriving transistor Tdr becomes equal to each other, and the drivingtransistor Tdr is connected as a diode. Therefore, a gate node and thesignal line 26 are charged with a current flowing through the drivingtransistor Tdr. Specifically, the current flows along a path: powersupply line layer 41→driving transistor Tdr→compensation transistorTcmp→signal line 26. Therefore, the driving transistor Tdr is controlledto be in an ON state, and thus, a potential of the signal line 26 andthe gate node connected to each other increases from a potential in aninitial state. However, when a threshold voltage of the drivingtransistor Tdr is |Vth|, it is difficult for a current flowing throughthe path to flow as the gate node approaches a potential (Vel−|Vth|),and thus, the signal line 26 and the gate node are saturated with apotential (Vel−|Vth|) until termination of a compensation period inwhich the compensation transistor Temp enters an OFF state. Therefore,the capacitive element C holds the threshold voltage |Vth| of thedriving transistor Tdr until termination of the compensation period inwhich the compensation transistor Temp enters an OFF state.

In the present embodiment, a compensation period and a writing periodare included in the horizontal scanning period, and each scanning linedriving circuit 32 supplies a scanning signal to the scanning lines 22to sequentially select the plurality of scanning lines 22 in eachhorizontal scanning period. The selection transistor Tsl of each displaypixel Pe corresponding to the scanning line 22 selected by the scanningline driving circuit 32 transitions to an ON state. Thus, the drivingtransistor Tdr of each display pixel Pe also transitions to an ON state.Further, each scanning line driving circuit 32 supplies a control signalto each control line 27 to sequentially select the plurality of controllines 27 in each compensation period. The compensation transistor Tcmpof each display pixel Pe corresponding to the control line 27 selectedby the scanning line driving circuit 32 transitions to an ON state.Also, the capacitive element C holds a threshold voltage |Vth| of thedriving transistor Tdr until termination of the compensation period inwhich the compensation transistor Temp enters an OFF state. When eachscanning line driving circuit 32 supplies the control signal to eachcontrol line 27 to control the compensation transistor Tcmp of eachdisplay pixel Pe to enter the OFF state, a path from the signal line 26to the gate node of the driving transistor Tdr enters a floating state,but (Vel−|Vth|) is maintained due to the capacitive element C. Then, thesignal line driving circuit 34 supplies a gradation potential (datasignal) corresponding to a gradation designated for each display pixelPe by an image signal supplied from an external circuit to a capacitiveelements Cref in parallel in each writing period. Also, the gradationvoltage is level-shifted using the capacitive element Cref, and thepotential is supplied to the gate of the driving transistor Tdr of eachdisplay pixel Pe via the signal line 26 and the selection transistorTsl. A voltage corresponding to the gradation voltage is held in thecapacitive element C while compensating for the threshold voltage |Vth|of the driving transistor Tdr. On the other hand, when the selection ofthe scanning line 22 in the writing period ends, each scanning linedriving circuit 32 supplies the control signal to each control line 28to control the emission control transistor Tel of each display pixel Pecorresponding to the control line 28 to enter an ON state. Therefore, adriving current corresponding to the voltage held in the capacitiveelement C in the immediately previous writing period is supplied fromthe driving transistor Tdr to the light emitting element 45 via theemission control transistor Tel. Each light emitting element 45 emitslight with a luminance corresponding to the gradation voltage asdescribed above, and thus, any image specified by the image signal isdisplayed in the display area 16. Also, in the driving current suppliedfrom the driving transistor Tdr to the light emitting element 45,influence of the threshold voltage is canceled, and thus, even when thethreshold voltage of the driving transistor Tdr varies in each displaypixel Pe, the variation is compensated and the current corresponding toa gradation level is supplied to the light emitting element 45.Accordingly, occurrence of display unevenness such as impaireduniformity of a display screen is suppressed, and as a result, it ispossible to achieve high quality display.

Next, driving using the current programming scheme will be describedwith reference to FIG. 3. When the scanning signal of the scanning line22 becomes the L level, the selection transistor Tsl is turned on.Further, when the control signal of the control line 27 becomes the Llevel, the compensation transistor Temp is turned on. Therefore, thedriving transistor Tdr functions as a diode since the gate potential andthe source potential or the drain potential on the side of connection tothe emission control transistor Tel become equal. Also, when the datasignal of the signal line 26 becomes an L level, the current Idata flowsalong a path: the power supply line layer 41→the driving transistorTdr→the compensation transistor Tcmp→the signal line 26. Further, inthis case, charge corresponding to the potential of the gate node of thedriving transistor Tdr is accumulated in the capacitive element C.

When the control signal of the control line 27 becomes an H level, thecompensation transistor Tcmp is turned off. In this case, the voltageacross the capacitive element C is held at the voltage when the currentIdata flows. When the control signal of the control line 28 becomes an Llevel, the emission control transistor Tel is turned on, and the currentIoled corresponding to the gate voltage flows between the source and thedrain of the driving transistor Tdr. Specifically, this current flowsalong a path: the power supply line layer 41→the driving transistorTdr→the emission control transistor Tel→the light emitting element 45.

Here, the current Ioled flowing through the light emitting element 45 isdetermined by a voltage between the gate node of the driving transistorTdr and a drain node or a source node on the side of connection to thepower supply line layer 41, but the voltage is a voltage held in thecapacitive element C when the current Idata flows through the signalline 26 by the scanning signal at the L level. Therefore, when thecontrol signal of the control line 28 becomes an L level, the currentIoled flowing through the light emitting element 45 substantiallymatches the current Idata flowing immediately before. Thus, in the caseof driving using the current programming scheme, an emission luminanceis defined by the current Idata. Further, while the scanning line 22 isa wiring different from the control line 27, the scanning line 22 andthe control line 27 may be an integrally formed wire.

Hereinafter, a specific structure of the organic electroluminescentdevice 100 of the first embodiment will be described in detail. Further,in each drawing referred to in the following description, a dimension ora scale of each element is different from that in an actual organicelectroluminescent device 100 for convenience of description. FIG. 4 isa sectional view of the organic electroluminescent device 100, and FIGS.5 to 13 are plan views illustrating a state of the surface of thesubstrate 10 in respective steps of forming respective elements of theorganic electroluminescent device 100 for one display pixel Pe. Asectional view corresponding to a section including line IV-IV in FIGS.5 to 13 corresponds to FIG. 4. Further, while FIGS. 5 to 13 are planviews, each element that is the same as that in FIG. 4 is convenientlyhatched in the same aspect as that in FIG. 4 from the viewpoint offacilitation of visual recognition of each element.

As is understood from FIGS. 4 and 5, an active area 10A (source/drainarea) of each transistor T (Tdr, Tsl, Tel, or Temp) of the display pixelPe is formed on a surface of the substrate 10 which is formed of asemiconductor material such as silicon. Ions are implanted into theactive area 10A. The active layer of each transistor T (Tdr, Tsl, Tel,or Tcmp) of the display pixel Pe exists between the source area and thedrain area and implanted with different types of ions from those of theactive area 10A, but is integrally described as the active area 10A, forconvenience. As is understood from FIGS. 4 and 6, the surface of thesubstrate 10 in which the active area 10A has been formed is coveredwith an insulating film L0 (gate insulating film), and a gate layer G(Gdr, Gsl, Gel, or Gcmp) of each transistor T is formed on the surfaceof the insulating film L0. The gate layer G of each transistor T facesthe active layer with the insulating film L0 interposed therebetween.

As is understood from FIG. 4, a multilayer wiring layer in which aplurality of insulating layers L (LA to LD) and a plurality ofconductive layers (wiring layers) are alternately stacked is formed onthe surface of the insulating film L0 on which the gate layer G of eachtransistor T has been formed. Each insulating layer L is formed of, forexample, an insulating inorganic material such as a silicon compound(typically, silicon nitride or silicon oxide). Further, in the followingdescription, a relationship in which a plurality of elements arecollectively formed in the same process through selective removal of theconductive layer (single layer or multiple layers) is indicated as“formed from the same layer”.

An insulating layer LA is formed on the surface of the insulating filmL0 on which the gate G of each transistor T has been formed. As isunderstood from FIGS. 4 and 7, the scanning line 22, the control line 27of the selection transistor Tsl, the control line 28 of the emissioncontrol transistor Tel, and the plurality of relay electrodes QB (QB1,QB2, QB3, QB4, QB5, and QB6) are formed from the same layer on thesurface of the insulating layer LA.

As is understood from FIGS. 4 and 7, the relay electrode QB1 iselectrically connected to the active area 10A forming the drain area orthe source area of the compensation transistor Tcmp via a conductionhole HA2 penetrating the insulating film L0 and the insulating layer LA.The relay electrode QB2 is electrically connected to the active area 10Aforming the source area or the drain area of the selection transistorTsl via a conduction hole HA3 penetrating the insulating layer LA andthe insulating film L0, and electrically connected to the gate layer Gelof the driving transistor Tdr through a conduction hole HB3 penetratingthe insulating layer LA. The relay electrode QB3 is electricallyconnected to the active area 10A forming the drain area or the sourcearea of the selection transistor Tsl via a conduction hole HA4penetrating the insulating film L0 and the insulating layer LA. Therelay electrode QB4 is electrically connected to the active area 10Aforming the drain area or the source area of the driving transistor Tdrvia the conduction hole HA5 penetrating the insulating film L0 and theinsulating layer LA. The relay electrode QB5 is electrically connectedto the active area 10A forming the drain area or the source area of thedriving transistor Tdr via a conduction hole HA6 penetrating theinsulating layer LA and the insulating film L0, electrically connectedto the active area 10A forming the drain area or the source area of thecompensation transistor Tcmp via a conduction hole HA1 penetrating theinsulating film L0 and the insulating layer LA, and electricallyconnected to the active area 10A forming the drain area or the sourcearea of the emission control transistor Tel via a conduction hole HA7penetrating the insulating film L0 and the insulating layer LA. Therelay electrode QB6 is electrically connected to the active area 10Aforming the source area or the drain area of the emission controltransistor Tel via a conduction hole HA8 penetrating the insulatinglayer LA and the insulating film L0.

As is understood from FIG. 7, the scanning line 22 is electricallyconnected to the gate layer Gsl of the selection transistor Tsl via theconduction hole HB2 penetrating the insulating layer LA. The scanningline 22 extends in a straight line shape in the X direction over theplurality of the display pixels Pe, and is electrically insulated fromthe signal line 26 to be described below by the insulating layer LB.

As is understood from FIG. 7, the control line 27 of the compensationtransistor Tcmp is electrically connected to the gate layer Gcmp of thecompensation transistor Temp via the conduction hole HB1 penetrating theinsulating layer LA. The control line 27 extends in a straight lineshape in the X direction over the plurality of the display pixels Pe,and is electrically insulated from the signal line 26 to be describedbelow by the insulating layer LB.

As is understood from FIG. 7, the control line 28 of the emissioncontrol transistor Tel is electrically connected to the gate layer Gelof the emission control transistor Tel via the conduction hole HB4formed in the insulating layer LA. The control line 28 extends in astraight line shape in the X direction over the plurality of the displaypixels Pe, and is electrically insulated from the signal line 26 to bedescribed below by the insulating layer LA.

The insulating layer LB is formed on the surface of the insulating layerLA on which on which the scanning line 22, the control line 27 of theselection transistor Tsl, the control line 28 of the emission controltransistor Tel, and a plurality of relay electrodes QB (QB1, QB2, QB3,QB4, QB5, and QB6) have been formed. As is understood from FIGS. 4 and8, the signal line 26 and the plurality of relay electrodes QC (QC1,QB2, and QC3) are formed on the surface of the insulating layer LB. Thesignal line 26 extends in a straight line shape in the Y direction overthe plurality of pixels P, and is electrically insulated from the firstpower supply line layer 41 to be described below by the insulating layerLC. The signal line 26 is electrically connected to the active area 10Aforming the source area or the drain area of the compensation transistorTemp and the selection transistor Tsl via the conduction hole HC1penetrating the insulating layer LB and the conduction hole HC2penetrating the insulating layer LB, as is understood from FIG. 8.Further, the signal line 26 is formed to pass through the positions of alayer over the scanning line 22, the control line 27, and the controlline 28, and extends in a direction (Y direction) of the channel lengthof the selection transistor Tsl.

The relay electrode QC1 is electrically connected to the active area 10Aforming the drain area or the source area of the driving transistor Tdrvia the conduction hole HC3 penetrating the insulating layer LB. Therelay electrode QC2 is electrically connected to the gate layer dr ofthe driving transistor Tdr via the conduction hole HC4 penetrating theinsulating layer LB. The relay electrode QC3 is electrically connectedto the active area 10A forming the drain area or the source area of theemission control transistor Tel via the conduction hole HC5 penetratingthe insulating layer LB.

The insulating layer LC is formed on the surface of the insulating layerLB on which the signal line 26 and the plurality of relay electrodes QC(QC1, QB2, and QC3) have been formed. As is understood from FIGS. 4 and9, a first power supply line layer 41 and a plurality of relayelectrodes QD (QD1 and QD2) are formed on the surface of the insulatinglayer LC. The first power supply line layer 41 is electrically connectedto the mounting terminal 36 to which the power supply potential Vel onthe high level side is supplied, via a wiring (not illustrated) withinthe multilayer wiring layer. Further, the first power supply line layer41 is formed in the display area 16 of the first area 12 illustrated inFIG. 1. Further, although not shown, another supply line layer is alsoformed in the peripheral area 18 of the first area 12. This power supplyline layer is electrically connected to the mounting terminal 36 towhich the power supply potential Vct on a low level side is supplied,via a wiring (not illustrated) within the multilayer wiring layer. Thefirst power supply line layer 41 and the power supply line layer towhich the power supply potential Vct on the low level side is suppliedare formed of a conductive material containing, for example, silver oraluminum and to a thickness of, for example, about 100 nm.

As is understood from FIGS. 4, 8 and 9, the relay electrode QD1 iselectrically connected to the relay electrode QC2 via the conductionhole HD2 penetrating the insulating layer LC. Accordingly, as isunderstood from FIGS. 4, and 6 to 8, the relay electrode QD1 iselectrically connected to the gate layer Gdr of the driving transistorTdr via the conduction hole I-HD2, the relay electrode QC2, theconduction hole HC4 penetrating the insulating layer LB, the relayelectrode QB2, and the conduction hole HB3 penetrating the insulatinglayer LA.

As is understood from FIGS. 4, 8 and 9, the relay electrode QD2 iselectrically connected to the relay electrode QC3 via the conductionhole HD3 penetrating the insulating layer LC. Thus, as is understoodfrom FIGS. 4 to 8, the relay electrode QD2 is electrically connected tothe active area 10A forming the drain area or the source area of theemission control transistor Tel via the conduction hole HD3, the relayelectrode QC3, the conduction hole HC5 penetrating the insulating layerLB, the relay electrode QB6, and the conduction hole HA8 penetrating theinsulating film L0 and the insulating layer LA. As described below, aplurality of relay electrodes and conduction holes are formed on a layerover the relay electrode QD2, and the relay electrode QD2 iselectrically connected to the pixel electrode via the relay electrodesand the conduction holes. Therefore, a conduction portion of the relayelectrode QD2 and the drain area or the source area of the emissioncontrol transistor Tel functions as a pixel electrode conductionportion.

The first power supply line layer 41 is a power supply wiring to whichthe power supply potential Vel on the high level side is supplied asdescribed above, and is arranged to surround the pixel electrodeconduction portion (the conduction portion between the emission controltransistor Tel and the relay electrode QD2) and a gate layer conductionportion of the driving transistor Tdr (the conduction portion betweenthe driving transistor Tdr and the relay electrode QD1), as isunderstood from FIG. 9. Further, the first power supply line layer 41 isa pattern formed to be continuous without a gap from the display pixelsPe adjacent in X and Y directions.

As is understood from FIGS. 4, 8 and 9, the first power supply linelayer 41 formed in the display area 16 is electrically connected to therelay electrode QC1 via the conduction hole HD1 penetrating theinsulating layer LC. Thus, as is understood from FIGS. 4 to 8, the firstpower supply line layer 41 is electrically connected to the active area10A forming the source area or the drain area of the driving transistorTdr via the conduction hole HC3 penetrating the insulating layer LB, therelay electrode QB4, and the conduction hole HA5 penetrating theinsulating film L0 and the insulating layer LA.

An insulating layer LD0 is formed on the surface of the insulating layerLC on which the first power supply line layer 41 and the plurality ofrelay electrodes QD (QD1 and QD2) have been formed. As is understoodfrom FIGS. 4 and 10, a capacitive electrode layer CA0 is formed on thesurface of the insulating layer LD0. Further, as is understood fromFIGS. 4 and 10, an insulating layer LD1 is formed on a surface of theinsulating layer LD0 on which the capacitive electrode layer CA0 hasbeen formed. A capacitive electrode layer CA1 connected to thecapacitive electrode layer CA0, and a plurality of relay electrodes QE(QE1, QE2, QE3, and QE4) are formed on the surface of the insulatinglayer LD1. The capacitive electrode layer CA1 is a rectangularcapacitive electrode layer arranged at a predetermined interval from therelay electrodes QE1, QE2, and QE3 and at a predetermined interval fromthe relay electrode QE4 in the Y direction, and arranged at apredetermined interval from the capacitive electrode layer CA1 of theadjacent display pixel Pe in the X direction, as is understood from FIG.10. The capacitive electrode layer CA1 is arranged to overlap thedriving transistor Tdr, the selection transistor Tsl, the compensationtransistor Tcmp, and the emission control transistor Tel in a plan view.As is understood from FIGS. 4 and 10, the capacitive electrode layer CA1is electrically connected to the relay electrode QD1 via the conductionhole HE4 penetrating the insulating layer LD0 and the insulating layerLD1. Therefore, the capacitive electrode layer CA1 is electricallyconnected to the gate layer Gdr of the driving transistor Tdr via theconduction hole HE4, the relay electrode QD1, the conduction hole HD2,the relay electrode QC2, the conduction hole HC4, the relay electrodeQB2, and the conduction hole HB3, as is understood from FIGS. 4, and 6to 10. The capacitive electrode layer CA0 is connected to the capacitiveelectrode layer CA1 via a plurality of conduction holes HE70 penetratingthe insulating layer LD1. The capacitive electrode layer CA0 has an areasurrounding the conduction hole HE4 penetrating the insulating layer LD0and the insulating layer LD1. The capacitive electrode layer CA0 is arectangular capacitive electrode layer having substantially the samesize as the capacitive electrode layer CA1. The capacitive electrodelayer CA0 and the capacitive electrode layer CA1 are insulated from thefirst power supply line layer 41 by the insulating layer LD0 and theinsulating layer LD1. The capacitive electrode layer CA0 has a structuresuspended from the capacitive electrode layer CA1, as is understood fromFIG. 4. The capacitive electrode layer CA0 is electrically connected tothe gate layer Gdr of the driving transistor Tdr via the capacitiveelectrode layer CA1. Further, the first power supply line layer 41 thatthe capacitive electrode layer CA0 faces via the insulating layer LD0 iselectrically connected to the source area or the drain area of thedriving transistor Tdr. Therefore, the capacitive electrode layer CA0corresponds to the first capacitive electrode C1 of the capacitiveelement C illustrated in FIGS. 2 and 3. The first power supply linelayer 41 corresponds to the second capacitive electrode C2 of thecapacitive element C illustrated in FIGS. 2 and 3. Since the capacitiveelectrode layer CA0 constituting the first capacitive electrode C1 ofsuch a capacitive element C has a structure suspended from thecapacitive electrode layer CA1, it is possible to obtain a thinnerdielectric layer of the capacitive element C and to obtain greatercapacitance of the capacitive element C, as compared to a case in whichusing the capacitive electrode layer CA1 alone. Alternatively, it ispossible to increase a degree of freedom of the arrangement of thecapacitive element C.

As is understood from FIGS. 4 and 10, the relay electrodes QE1, QE2, andQE3 are electrically connected to the power supply line layer 41 via theconduction holes HE1, HE2, and HE3 penetrating the insulating layer LD0and the insulating layer LD1. As is understood from FIGS. 4, 9 and 10,the relay electrodes QE3 is also electrically connected to the activearea 10A forming the source area or the drain area of the drivingtransistor Tdr via the conduction hole HE3, the conduction hole HD1, therelay electrode QC1, the conduction hole HC3, the relay electrode QB4,and the conduction hole HA5.

As is understood from FIGS. 4, 9 and 10, the relay electrodes QE4 iselectrically connected to the relay electrode QD2 via the conductionhole HE5 penetrating the insulating layer LD0 and the insulating layerLD1. Therefore, the relay electrode QE4 is one of the relay electrodesconstituting the pixel electrode conduction portion, and is electricallyconnected to the active area 10A forming the drain area or the sourcearea of the emission control transistor Tel via the conduction hole HE5,the relay electrode QD2, the conduction hole HD3, the relay electrodeQC3, the conduction hole HC5, the relay electrode QB6, and theconduction hole HA8, as is understood from FIGS. 4 to 10.

An insulating layer LE0 is formed on the surface of the insulating layerLD1 on which the capacitive electrode layer CA1 and the plurality ofrelay electrodes QE (QE1, QE2, QE3, and QE4) have been formed. As isunderstood from FIGS. 4 and 11, an upper power supply line layer 43-0 isformed on the surface of the insulating layer LE0. Further, as isunderstood from FIGS. 4 and 11, an insulating layer LE1 is formed on thesurface of the insulating layer LE0 on which the upper power supply linelayer 43-0 has been formed.

A planarization process is executed for the surface of the insulatinglayer LE1. In the planarization process, a known surface processingtechnology such as chemical mechanical polishing (CMP) is optionallyadopted. The upper power supply line layer 43-1 connected to the upperpower supply line layer 43-0, and the relay electrode QF1 are formed ona surface of the insulating layer LE1 highly planarized in theplanarization process, as illustrated in FIGS. 4 and 11. As isunderstood from FIGS. 4, 10 and 11, the relay electrode QF1 iselectrically connected to the relay electrode QE4 via the conductionhole HF4 penetrating the insulating layer LE0 and the insulating layerLE1. Therefore, the relay electrode QF1 is one of the relay electrodesconstituting the pixel electrode conduction portion, and is electricallyconnected to the active area 10A forming the drain area or the sourcearea of the emission control transistor Tel via the conduction hole HF4,the relay electrode QE4, the conduction hole HE5, the relay electrodeQD2, the conduction hole HD3, the relay electrode QC3, the conductionhole HC5, the relay electrode QB6, and the conduction hole HA5, as isunderstood from FIG. 4 to 11.

The upper power supply line layer 43-1 is arranged to surround the pixelelectrode conduction portion (a conduction portion between the emissioncontrol transistor Tel and the relay electrode QF1), as is understoodfrom FIG. 11. Further, the upper power supply line layer 43-1 is apattern formed to be continuous without a gap from the display pixels Peadjacent in X and Y directions. In this embodiment, the upper powersupply line layer 43-1 also functions as a reflective layer, and isformed of a light reflective and conductive material containing, forexample, silver or aluminum and to a thickness of, for example, about100 nm. The upper power supply line layer 43-1 is formed of an opticallyreflecting conductive material, and is arranged to cover each transistorT, each wiring, and each relay electrode, as illustrated in FIG. 11.Therefore, there is an advantage in that the intrusion of external lightcan be prevented by the upper power supply line layer 43-1, and theleakage of a current of each transistor T caused by light irradiationcan be prevented.

As is understood from FIG. 4, the upper power supply line layer 43-0 isconnected to the upper power supply line layer 43-1 via a plurality ofconduction holes HF70 penetrating the insulating layer LE1. As isunderstood from FIG. 11, the upper power supply line layer 43-0 is arectangular electrode layer arranged at a predetermined interval fromthe conduction holes HF1, HF2, and HF3 and at a predetermined intervalfrom the relay electrode QF1 in the Y direction, and arranged at apredetermined interval from the upper power supply line layer 43-0 ofthe adjacent display pixel Pe in the X direction. The upper power supplyline layer 43-0 and the upper power supply line layer 43-1 are insulatedfrom the capacitive electrode layer CA1 by the insulating layer LE0 andthe insulating layer LE1. The upper power supply line layer 43-0 has astructure suspended from the upper power supply line layer 43-1, as isunderstood from FIG. 4. The upper power supply line layer 43-0 iselectrically connected to the first power supply line layer 41 via theupper power supply line layer 43-1, and electrically connected to thesource area or the drain area of the driving transistor Tdr. Further,the upper power supply line layer 43-0 faces the capacitive electrodelayer CA0 via the insulating layer LE0 and the insulating layer LD1. Thecapacitive electrode layer CA0 is electrically connected to the gatelayer Gdr of the driving transistor Tdr via the capacitive electrodelayer CA1. Therefore, the upper power supply line layer 43-0 correspondsto the second capacitive electrode C2 of the capacitive element Cillustrated in FIGS. 2 and 3, and the capacitive electrode layer CA0corresponds to the first capacitive electrode C1 of the capacitiveelement C illustrated in FIGS. 2 and 3. Therefore, since the upper powersupply line layer 43-0 constituting the second capacitive electrode C2of the capacitive element C has a structure suspended from the upperpower supply line layer 43-1, it is possible to obtain a thinnerdielectric layer of the capacitive element C and to obtain greatercapacitance of the capacitive element C. It is possible to increase adegree of freedom of the arrangement, as compared to a case in which theupper power supply line layer 43-1 is used alone. Further, in thisexample, since the capacitive electrode layer CA0 constituting the firstcapacitive electrode C1 of the capacitive element C has the structuresuspended from the capacitive electrode layer CA1 as described above, itis possible to further increase the capacitance of the capacitiveelement C as a whole. As described above, in this embodiment, thecapacitive element C including the first power supply line layer 41, theinsulating layer LD0, and the capacitive electrode layer CA0, and thecapacitive element C including the capacitive electrode layer CA0, theinsulating layer LD1, the insulating layer LE0, and the upper powersupply line layer 43-0 are configured to be stacked in the stackingdirection (Z direction).

The upper power supply line layer 43-1 is electrically connected to therelay electrodes QE1, QE2, and QE3 via the conduction holes HF1, HF2,and HF3 penetrating the insulating layer LE0 and the insulating layerLE1, as is understood from FIGS. 10 and 11. Therefore, the upper powersupply line layer 43-1 is electrically connected to the upper powersupply line layer 43-0 via the relay electrodes QE1, QE2, and QE3, theconduction holes HF1, HF2, and HF3, the relay electrodes QE1, QE2, andQE3, and conduction holes HE1, HE2, and HE3 penetrating the insulatinglayer LD0 and the insulating layer LD1, as is understood from FIGS. 9 to11. Thus, in the present embodiment, the conduction holes HF1, HF2, andHF3, the relay electrodes QE1, QE2, and QE3, the conduction holes HF1,HF2, and HF3, the relay electrodes QE1, QE2, and QE3, and the conductionholes HE1, HE2, and HE3 constitute the inter-power supply conductionportion. The inter-power supply conduction portion is provided to bealigned in the extending direction (X direction) of the scanning line22.

The insulating layer LF is formed on the surface of the insulating layerLE1 on which the upper power supply line layer 43-1 and the relayelectrode QF1 have been formed. As is understood from FIGS. 4 and 12, arelay electrode QG1 is formed on the surface of the insulating layer LF.The relay electrode QG1 is electrically connected to the relay electrodeQF1 via a conduction hole HG1 penetrating the insulating layer LF.Therefore, the relay electrode QG1 is one of the relay electrodesconstituting the pixel electrode conduction portion, and is electricallyconnected to the active area 10A forming the drain area or the sourcearea of the emission control transistor Tel via the conduction hole HG1,the relay electrode QF1, the conduction hole HF4, the relay electrodeQE4, the conduction hole HE5, the relay electrode QD2, the conductionhole HD3, the relay electrode QC3, the conduction hole HC5, the relayelectrode QB6, and the conduction hole HA5, as is understood from FIGS.4 to 12. The relay electrode QG1 is arranged to cover a gap between thefirst power supply line layer 41 and the relay electrode QD2 and a gapbetween the upper power supply line layer 43-1 and the relay electrodeQF1 in a plan view. Therefore, there is an advantage in that theintrusion of external light is prevented by the relay electrode QG1 andthe leakage of a current of each transistor T caused by lightirradiation can be prevented.

As illustrated in FIG. 4, an optical path adjustment layer 60 is formedon the surface of the insulating layer LF on which the relay electrodeQG1 has been formed. The optical path adjustment layer 60 is a lighttransmissive film body that defines a resonance wavelength (that is,display color) of the resonant structure of each display pixel Pe. Theresonance wavelengths of the resonant structures are substantially thesame in the pixels having the same display colors, and the resonancewavelengths of the resonant structures are set to be different from eachother in the pixels having different display colors.

As illustrated in FIGS. 4 and 13, the first electrode E1 of each displaypixel Pe in the display area 16 is formed on a surface of the opticalpath adjustment layer 60. The first electrode E1 is formed of a lighttransmissive conductive material such as ITO (Indium Tin Oxide). Thefirst electrode E1 is a substantially rectangular electrode (pixelelectrode) functioning as a positive electrode of the light emittingelement 45, as has been described above with reference to FIGS. 2 and 3.The first electrode E1 is electrically connected to the relay electrodeQG1 via a conduction hole HH1 formed in the optical path adjustmentlayer 60 in each display pixel Pe, as is understood from FIGS. 4 and 13.Thus, as is understood from FIGS. 4 to 13, the first electrode E1 iselectrically connected to the active area 10A forming the drain area orthe source area of the emission control transistor Tel via theconduction hole HH1 penetrating the optical path adjustment layer 60,the relay electrode QG1, the conduction hole HG1, the relay electrodeQF1, the conduction hole HF4, the relay electrode QE4, the conductionhole HE5, the relay electrode QD2, the conduction hole HD3, the relayelectrode QC3, the conduction hole HC5, the relay electrode QB6, and theconduction hole HA8.

A pixel definition layer 65 is formed over the entire area of thesubstrate 10 on a surface of the optical path adjustment layer 60 onwhich the first electrode E1 has been formed, as illustrated in FIGS. 4and 14. The pixel definition layer 65 is formed of, for example, aninsulating inorganic material such as a silicon compound (typically,silicon nitride or silicon oxide). As is understood from FIG. 14, anopening 65A corresponding to each of the first electrodes E1 in thedisplay area 16 is formed in the pixel definition layer 65. An area nearan inner periphery of the opening 65A of the pixel definition layer 65overlaps the periphery of the first electrode E1. That is, the innerperiphery of the opening 65A is located on an inner side of theperiphery of the first electrode E1 in a plan view. The respectiveopenings 65A are the same in a plan shape (rectangular shape) or a size,and are arranged in a matrix shape with the same pitch in each of X andY directions. As is understood from the above description, the pixeldefinition layer 65 is formed in a grid shape in a plan view. Further,the plan shapes or the sizes of the openings 65A may be the same as oneanother when the display colors are the same as one another and may bedifferent from one another when the display colors are different fromone another. Further, the pitches of the openings 65A are the same asone another when the display colors are the same as one another, and maybe different from one another when the display colors are different fromone another.

Further, although a detailed description is omitted, the light emittingfunction layer 46, the second electrode E2, and the sealing body 47 arestacked on the layer over the first electrode E1, and a sealingsubstrate (not illustrated) is bonded to a surface of the substrate 10in which the respective elements have been formed, for example, using anadhesive. The sealing substrate is a light transmissive plate-shapedmember (for example, a glass substrate) for protecting each element onthe substrate 10. Further, a color filter can be formed in each displaypixel Pe on the surface of the sealing substrate or the surface of thesealing body 47.

As described above, in this embodiment, the capacitive electrode layerCA1 connected to the gate layer Gdr of the driving transistor Tdr andthe capacitive electrode layer CA0 connected to the capacitive electrodelayer CA1 are provided on a layer over the gate layer Gdr of the drivingtransistor Tdr, and the first power supply line layer 41 is configuredto be arranged between the capacitive electrode layer CA1 and thecapacitive electrode layer CA0, and the signal line 26 connected to thedrain area or the source area of the compensation transistor Tcmp andthe selection transistor Tsl. The first power supply line layer 41 isformed over the substantially entire surface other than the conductionportion between the first electrode E1 that is a pixel electrode and thesource area or the drain area of the emission control transistor Tel,that is, the pixel electrode conduction portion and the gate conductionportion of the driving transistor Tdr. Therefore, coupling between thesignal line 26 that is a noise source, and the capacitive electrodelayer CA1 and the capacitive electrode layer CA0 connected to the gatelayer Gdr of the driving transistor Tdr is suppressed.

Further, while the scanning line 22 connected to the gate layer Gsl ofthe selection transistor Tsl is arranged on a layer under the lowersignal line 26, the first power supply line layer 41 is configured to bearranged between the scanning line 22 and the signal line 26, and thecapacitive electrode layer CA1 and the capacitive electrode layer CA1.The first power supply line layer 41 is formed over the substantiallyentire surface to cover not only the signal line 26, but also thescanning line 22. Therefore, coupling between the scanning line 22 andthe signal line 26 that are noise sources and the capacitive electrodelayer CA1 and the capacitive electrode layer CA0 connected to the gatelayer Gdr of the driving transistor Tdr is suppressed.

In this embodiment, the upper power supply line layer 43-1 and the upperpower supply line layer 43-0 are arranged between the capacitiveelectrode layer CA1 and the capacitive electrode layer CA0, and thefirst electrode E1 that is a pixel electrode. The upper power supplyline layer 43-1 and the upper power supply line layer 43-0 are formedover a substantially entire surface other than the pixel conductionportion described above. Therefore, coupling between the capacitiveelectrode layer CA1 and the capacitive electrode layer CA0 connected tothe gate layer Gdr of the driving transistor Tdr, and the firstelectrode E1 that is a pixel electrode is suppressed.

The conduction portion between the first electrode E1 that is a pixelelectrode and the source area or the drain area of the emission controltransistor Tel, that is, the pixel electrode conduction portion includesthe conduction hole HA8 penetrating the insulating film L0 and theinsulating layer LA, the relay electrode QB6, the conduction hole HC5penetrating the insulating layer LB, the relay electrode QC3, theconduction hole HD3 penetrating the insulating layer LC, the relayelectrode QD2, the conduction hole HE5 penetrating the insulating layerLD0 and the insulating layer LD1, the relay electrode QE4, theconduction hole HF4 penetrating the insulating layer LE0 and theinsulating layer LE1, the relay electrode QF1, the conduction hole HG1penetrating the insulating layer LF, and the relay electrode QG1. Thesefunction as a source wiring or a drain wiring of the emission controltransistor Tel. That is, the conduction portion between the firstelectrode E1 and the source area or the drain area of the emissioncontrol transistor Tel includes the source wiring or the drain wiring ofthe emission control transistor Tel provided through the first powersupply line layer 41, the capacitive electrode layer CA1 and thecapacitive electrode layer CA0, and the upper power supply line layer43-1 and the upper power supply line layer 43-0. Also, the firstelectrode E1 that is a pixel electrode is connected to the source wiringor the drain wiring of the emission control transistor Tel via theconduction hole HH1 penetrating the optical path adjustment layer 60.Therefore, the source area or the drain area of the emission controltransistor Tel can be connected to the first electrode E1 that is thepixel electrode with less resistance, as compared to a case in which thepixel electrode extends to the layer of the source area or the drainarea of the emission control transistor Tel to achieve the conduction.

The conduction portion connecting the driving transistor Tdr to thefirst power supply line layer 41 includes the conduction hole HA5penetrating the insulating film L0 and the insulating layer LA, therelay electrode QB4, the conduction hole HC3 penetrating the insulatinglayer LB, the relay electrode QC1, and the conduction hole HD1penetrating the insulating layer LC. These conduction portions functionas a source wiring or a drain wiring of the driving transistor Tdr.Using this configuration, the driving transistor Tdr can be connected tothe first power supply line layer 41 with less resistance, as comparedto a case in which the first power supply line layer 41 extends to alower layer to achieve the conduction. The conductive portion connectingthe driving transistor Tdr to the upper power supply line layer 43-0includes the conduction hole HA5 penetrating the insulating film L0 andthe insulating layer LA, the relay electrode QB4, the conduction holeHC3 penetrating the insulating layer LB, the relay electrode QC1, theconduction hole HD1 penetrating the insulating layer LC, the first powersupply line layer 41, the conduction holes HE1, HE2, and HE3 penetratingthe insulating layer LD0 and the insulating layer LD1, the relayelectrodes QE1, QE2, and QE3, the conduction holes HF1, HF2, and HF3,and the upper power supply line layer 43-0. Using this configuration,the driving transistor Tdr can be connected to the upper power supplyline layer 43-0 with less resistance, as compared to a case in which theupper power supply line layer 43-0 extends to a lower layer to achievethe conduction.

The conduction portion connecting the gate layer Gdr of the drivingtransistor Tdr to the capacitive electrode layer CA0 includes theconduction hole HB3 penetrating the insulating layer LA, the relayelectrode QB2, the conduction hole HC4 penetrating the insulating layerLB, the relay electrode QC2, the conduction hole HD2 penetrating theinsulating layer LC, the relay electrode QD1, the conduction hole HE4penetrating the insulating layer LD0 and the insulating layer LD1, andthe capacitive electrode layer CA1. This conduction portion is a sourcewiring or a drain wiring of the selection transistor Tsl, and isprovided through, for example, the layers on which the scanning line 22,the signal line 26, and the first power supply line layer 41 have beenformed. Therefore, it is possible to connect the driving transistor Tdrto the capacitive electrode layer CA1 with less resistance, as comparedto a case in which the capacitive electrode layer CA0 extends to a lowerlayer to achieve the conduction.

The capacitive element C has a configuration in which two types ofcapacitive elements including the first capacitive element C-1 havingthe upper power supply line layer 43-0 as the second capacitiveelectrode C2 and the capacitive electrode layer CA0 as the firstcapacitive electrode C1, and the second capacitive element C-2 havingthe first power supply line layer 41 as the second capacitive electrode(power supply-side capacitive electrode) C2 and the capacitive electrodelayer CA0 as the first capacitive electrode (gate electrode-sidecapacitive electrode) C1 are stacked in a stacking direction (Zdirection), as described above. In the first capacitive element C-1, theupper power supply line layer 43-0 that is the second capacitiveelectrode C2 is configured to be electrically connected to the upperpower supply line layer 43-1 and arranged on a layer under the upperpower supply line layer 43-1. In the above example, for example, thisarrangement is realized by a structure suspended from the upper powersupply line layer 43-1. Therefore, it is possible to obtain a thinnerdielectric film of the first capacitive element C-1 and to obtaingreater capacitance of the first capacitive element C-1, as compared toa case in which the upper power supply line layer 43-1 formed on thesame layer as the relay electrode is used as the second capacitiveelectrode C2. Alternatively, it is possible to increase a degree offreedom of the arrangement of the first capacitive element C-1.

In the second capacitive element C-2, the capacitive electrode layer CA0that is the first capacitive electrode (gate electrode-side capacitiveelectrode) C1 is configured to be electrically connected to thecapacitive electrode layer CA1 that is a gate wiring connected to thegate layer Gdr of the driving transistor Tdr and arranged on a layerunder the capacitive electrode layer CA1. In the above example, forexample, this arrangement is realized by a structure suspended from thecapacitive electrode layer CA1. Therefore, it is possible to obtain athinner dielectric layer of the second capacitive element C-2, and toobtain greater capacitance of the second capacitive element C-2, ascompared to a case in which the capacitive electrode layer CA1 formed onthe same layer as the relay electrode is used as the first capacitiveelectrode (gate electrode-side capacitive electrode) C1. Alternatively,it is possible to increase a degree of freedom of the arrangement of thesecond capacitive element C-2.

Further, in the second capacitive element C-2, the capacitive electrodelayer CA0 corresponding to the first capacitive electrode (gateelectrode-side capacitive electrode) C1 connected to the gate layer Gdrof the driving transistor Tdr is arranged between the upper power supplyline layer 43-0 corresponding to the second capacitive electrode C2 andthe layer on which the scanning line 22 has been formed. That is, thefirst capacitive electrode C1 of the capacitive element C is arranged onthe side of the layer on which the scanning line 22 has been formed.Therefore, since the capacitive electrode can be formed separately fromthe layer on which the scanning line 22 has been formed or the upperpower supply line layer 43-0, it is possible to increase a degree offreedom of design.

In the second capacitive element C-2, the capacitive electrode layer CA0corresponding to the first capacitive electrode (gate electrode-sidecapacitive electrode) C1 is arranged between the first power supply linelayer 41 as a second capacitive electrode (power supply-side capacitiveelectrode) C2 and the first electrode E1 that is a pixel electrode. Thatis, the first capacitive electrode (gate electrode-side capacitiveelectrode) C1 of the capacitive element C connected to the gatepotential side is arranged on the pixel electrode side. Further, thefirst power supply line layer 41 as the second capacitive electrode(power supply-side capacitive electrode) C2 is arranged between thelayer on which the gate layer Gdr that is the gate electrode has beenformed and the layer on which the first capacitive electrode (gateelectrode-side capacitive electrode) C1. By adopting this arrangement,it is possible to reduce noise caused by the scanning line 22 withrespect to the first electrode E1 that is a pixel electrode. Further,since the capacitive electrode can be formed separately from the firstelectrode E1 that is a pixel electrode or the first power supply linelayer 41, it is possible to increase a degree of freedom of design.Further, since a potential of the first electrode E1 (the drain area orthe source area of the emission control transistor Tel) that is a pixelelectrode is set according to the potential of the driving transistorTdr or the light emitting element 45, the potential of the firstcapacitive electrode (gate electrode-side capacitive electrode) C1 thatis a capacitive electrode is less susceptible to a variation due to agradation voltage as compared to a case of an arrangement on thescanning line 22 side.

The first capacitive element C-1 and the second capacitive element C-2are provided in positions overlapping the selection transistor Tsl, theemission control transistor Tel, the compensation transistor Tcmp, andthe driving transistor Tdr in a plan view. Thus, it is possible toachieve a high density of pixels while securing the capacitance of thecapacitive element. Thus, according to this embodiment, it is possibleto effectively utilize the layer over the gate layer Gdr of the drivingtransistor Tdr and provide a pixel structure for high-density pixels.

As is understood from FIGS. 4, and 9 to 11, the inter-power supplyconduction portion that achieves conduction between the first powersupply line layer 41 as the first power supply-side capacitive electrodeand the upper power supply line layer 43-1 connected to the upper powersupply line layer 43-0 as the second power supply-side capacitiveelectrode includes the conduction holes HE1, HE2, and HE3 penetratingthe insulating layer LD0 and the insulating layer LD1, the relayelectrodes QE1, QE2, and QE3, and the conduction holes HF1, HF2, and HF3penetrating the insulating layer LE0 and the insulating layer LE1. Thatis, since the inter-power supply conduction portion is provided to bealigned in the extending direction (X direction) of the scanning line22, the inter-power supply conduction portion is arranged between thecapacitive electrode layer 43-1 and the capacitive electrode layer 43-0arranged between the first power supply line layer 41 and the upperpower supply line layer 43-1 and the capacitive electrode layer 43-1 andthe capacitive electrode layer 43-0 in the display pixel Pe adjacent inthe Y direction, and coupling of the adjacent capacitive electrodelayers is suppressed.

The inter-power supply conduction portion may be not only provided to bealigned in the extending direction (X direction) of the scanning line22, but also provided to be aligned in the extending direction (Ydirection) of the signal line 26, as illustrated in FIGS. 15 and 16.FIG. 15 is a diagram corresponding to FIG. 10, and FIG. 16 is a diagramcorresponding to FIG. 11. In the example illustrated in FIG. 15, theinter-power supply conduction portion includes the conduction holes HE1,HE2, and HE3 penetrating the insulating layer LD0 and the insulatinglayer LD1, the relay electrodes QE1, QE2, and QE3, and the conductionholes HF1, HF2, and HF3 penetrating the insulating layer LE0 and theinsulating layer LE1, and is provided to be aligned in the extendingdirection (X direction) of the scanning line 22, as in FIG. 10. Further,as is understood from FIG. 15, the inter-power supply conduction portionincludes the conduction holes HE6, HE7, HE8, HE9, HE10, and HE11penetrating the insulating layer LD0 and the insulating layer LD1, relayelectrodes QE5, QE6, QE7, QE8, QE9, and QE10, conduction holes HF5, HF6,HF7, HF8, HF9, and HF10 penetrating the insulating layer LE0 and theinsulating layer LE1, and is provided to be aligned in the extendingdirection (Y direction) of the signal line 26. The relay electrodes QE1,QE2, QE3, QE5, QE6, QE7, QE8, QE9, and QE10 are electrically connectedto the first power supply line layer 41 via the conduction holes HE1,HE2, HE3, HE6, HE7, HE8, HE9, HE10, and HE11 penetrating the insulatinglayer LD0 and the insulating layer LD1. Further, as is understood fromFIG. 16, the relay electrodes QE1, QE2, QE3, QE5, QE6, QE7, QE8, QE9,and QE10 are electrically connected to the upper power supply line layer43-1 via the conduction holes HF1, HF2, HF3, HF5, HF6, HF7, HF8, HF9,and HF10 penetrating the insulating layer LE0 and the insulating layerLE1. Therefore, the inter-power supply conduction portion is arrangednot only between the capacitive electrode layer 43-1 and the capacitiveelectrode layer 43-0 arranged between the first power supply line layer41 and the upper power supply line layer 43-1, and the capacitiveelectrode layer 43-1 and the capacitive electrode layer 43-0 in thedisplay pixel Pe adjacent in the Y direction, but also between thecapacitive electrode layer 43-1 and the capacitive electrode layer 43-0,and the capacitive electrode layer 43-1 and the capacitive electrodelayer 43-0 in the display pixel Pe adjacent in the X direction, andcoupling between the capacitive electrode layers adjacent in the Ydirection and the X direction is suppressed.

Further, in the present embodiment, the scanning line 22, the controlline 27, the control line 28, and the relay electrode connecting thetransistors are arranged on a layer over the layer on which the layerGdr of the driving transistor Tdr has been formed. Therefore, on a layerover this, a capacitive element, a power supply line layer, a signalline, or the like other than the pixel electrode conduction portion, orthe gate conduction portion of the driving transistor Tdr can be freelyarranged. In particular, it is preferable that the channel lengthdirection of the transistor is a direction intersecting the controlline, and the scanning line 22, the control line 27, the control line28, and the like are arranged on the insulating layer LA of the gatelayer Gdr of the driving transistor Tdr. Thus, the scanning line 22, thecontrol line 27, the control line 28 or the like can be arranged on alayer over the selection transistor Tsl, the compensation transistorTemp, and the emission control transistor Tel. Further, with such alayered structure, for example, the power supply line layer 41 or thesignal line 26 intersecting the scanning line 22, the control line 27,the control line 28, or the like is easily arranged on the insulatinglayer LB.

Second Embodiment

A second embodiment of the invention will be described with reference toFIGS. 17 to 21. Further, in each form to be illustrated below, elementshaving the same operation or function as in the first embodiment aredenoted with the signs referred to in the description of the firstembodiment, and each detailed description will be appropriately omitted.

FIG. 17 is a sectional view of an organic electroluminescent device 100of this embodiment, and corresponds to the sectional view of FIG. 4 inthe first embodiment. As can be seen from a comparison between FIGS. 17and 4, in this embodiment, the upper power supply line layer 43-1 andthe upper power supply line layer 43-0 are not provided and, instead, areflective layer 55 connected to a first electrode E1 that is a pixelelectrode is provided. In this embodiment, since a layered structurefrom the active area 10A of each of transistors T (Tdr, Tsl, Tel, orTemp) formed on the substrate 10 to the first power supply line layer 41formed on the insulating layer LC is the same as the layered structurein the first embodiment illustrated in FIGS. 5 to 9, a descriptionthereof will be omitted. FIG. 18 is a plan view corresponding to FIG. 10in the first embodiment, FIG. 20 is a plan view corresponding to FIG. 13in the first embodiment, and FIG. 21 is a plan view corresponding toFIG. 14 in the first embodiment. FIG. 19 is a plan view illustrating thereflective layer 55 which is a characteristic portion of thisembodiment.

In this embodiment, an insulating layer LD0 is formed on the surface ofthe insulating layer LC on which the first power supply line layer 41has been formed, and a capacitive electrode layer CA0 is formed on thesurface of the insulating layer LD0, as is understood from FIGS. 17 and18. An insulating layer LD is formed on the surface of the insulatinglayer LD0 on which the capacitive electrode layer CA0 has been formed,and a capacitive electrode layer CA1 connected to the capacitiveelectrode layer CA0 is formed on the surface of the insulating layerLD1. This layered structure is the same as that in the first embodiment.Also, an inter-power supply conduction portion (conduction holes HE1,HE2, and HE3 penetrating the insulating layer LD0 and the insulatinglayer LD1, relay electrodes QE1, QE2, and QE3, and conduction holes HF1,HF2, and HF3 penetrating the insulating layer LE0 and the insulatinglayer LE1) is omitted unlike FIG. 10, and the capacitive electrode layerCA0 and the capacitive electrode layer CA1 are arranged to be extendedto an area in which the inter-power supply conduction portion has beenprovided. Therefore, capacitance of the capacitive element C includingthe first power supply line layer 41, the insulating layer LD0, and thecapacitive electrode layer CA0 can be greater than that in the firstembodiment.

In this embodiment, the insulating layer LE0 is formed on the surface ofthe insulating layer LD1 on which the capacitive electrode layer CA1 hasbeen formed, and the reflective layer 55 is formed on the surface of theinsulating layer LE0, as is understood from FIGS. 18 and 19. Thereflective layer 55 is separately formed in each display pixel Pe,similarly to the first electrode E1. The reflective layer 55 is formedof an optically reflecting conductive material containing, for example,silver or aluminum and to a film thickness of, for example, about 100nm. As is understood from FIGS. 17 to 19, the reflective layer 55 iselectrically connected to a relay electrode QE4 via a conduction holeHF4 penetrating the insulating layer LE0. The relay electrode QE4 is anelectrode constituting the pixel electrode conduction portion asdescribed in the first embodiment.

An optical path adjustment layer 60 is formed on the surface of theinsulating layer LE0 on which the reflective layer 55 has been formed.The optical path adjustment layer 60 is a light transmissive film bodythat defines a resonance wavelength (that is, display color) of theresonant structure of each display pixel Pe, as in the first embodiment.The resonance wavelengths of the resonant structures are substantiallythe same in the pixels having the same display colors, and the resonancewavelengths of the resonant structures are set to be different from eachother in the pixels having different display colors.

As illustrated in FIGS. 17 and 20, the first electrode E1 of eachdisplay pixel Pe in the display area 16 is formed on a surface of theoptical path adjustment layer 60. The first electrode E1 is formed of alight transmissive conductive material such as ITO (Indium Tin Oxide).The first electrode E1 is electrically connected to the reflective layer55 via the conduction hole HH1 penetrating the optical path adjustmentlayer 60. Therefore, the first electrode E1 is electrically connected tothe pixel electrode conduction portion via the reflective layer 55.

The pixel definition layer 65 is formed over the entire area of thesubstrate 10 on a surface of the optical path adjustment layer 60 onwhich the first electrode E1 has been formed, as illustrated in FIGS. 17and 21. The pixel definition layer 65 is formed of, for example, aninsulating inorganic material such as a silicon compound (typically,silicon nitride or silicon oxide). As is understood from FIG. 21, anopening 65A corresponding to each of the first electrodes E1 in thedisplay area 16 is formed in the pixel definition layer 65. An area nearan inner periphery of the opening 65A in the pixel definition layer 65overlaps the periphery of the first electrode E1. That is, the innerperiphery of the opening 65A is located on an inner side of theperiphery of the first electrode E1 in a plan view. The respectiveopenings 65A are the same in a plan shape (rectangular shape) or a size,and are arranged in a matrix shape with the same pitch in each of X andY directions. As is understood from the above description, the pixeldefinition layer 65 is formed in a grid shape in a plan view. Further,the plan shapes or the sizes of the openings 65A may be the same as oneanother when the display colors are the same as one another and may bedifferent from one another when the display colors are different fromone another. Further, the pitches of the openings 65A are the same asone another when the display colors are the same as one another, and maybe different from one another when the display colors are different fromone another.

Further, although a detailed description is omitted, the light emittingfunction layer 46, the second electrode E2, and the sealing body 47 arestacked on the layer over the first electrode E1, and a sealingsubstrate (not illustrated) is bonded to a surface of the substrate 10in which the respective elements have been formed, for example, using anadhesive. The sealing substrate is a light transmissive plate-shapedmember (for example, a glass substrate) for protecting each element onthe substrate 10. Further, a color filter can be formed in each displaypixel Pe on the surface of the sealing substrate or the surface of thesealing body 47.

As described above, in the present embodiment, the reflective layer 55is electrically connected to the first electrode E1 that is a pixelelectrode, and is not electrically connected to first power supply linelayer 41. Thus, in this embodiment, the capacitive element C includesthe capacitive electrode layer CA0, the insulating layer LD0, and thefirst power supply line layer 41. The reflective layer 55 is set to apixel potential such that a display defect can be prevented even whenthey are short-circuited. While the optical path adjustment layer 60 isformed between the reflective layer 55 and the first electrode E1 thatis a pixel electrode, the display defect due to short-circuit of thereflective layer 55 and the first electrode E1 that is pixel electrodecan be prevented in a pixel in which the optical path adjustment layer60 is thin.

In the first embodiment, the relay electrode QG1 is arranged to cover agap between the first power supply line layer 41 and the relay electrodeQD2 and a gap between the upper power supply line layer 43-1 and therelay electrode QF1 in a plan view, whereas in the present embodiment,the reflective layer 55 is arranged to cover a gap between the firstpower supply line layer 41 and the relay electrode QD2. Therefore, thereis an advantage in that the intrusion of external light can be preventedby the reflective layer 55, and the leakage of a current of eachtransistor T caused by light irradiation can be prevented.

Further, with the same configuration as that in the first embodiment, itis possible to achieve the same effects as in the first embodimentdescribed above. Further, in the second embodiment, the samemodification example as the modification example described in the firstembodiment is also applicable.

Third Embodiment

A third embodiment of the invention will be described. Further, in eachform to be illustrated below, elements having the same operation orfunction as in the first embodiment and the second embodiment aredenoted with the signs referred to in the description of the first andsecond embodiments, and each detailed description will be appropriatelyomitted.

A circuit of each display pixel Pe of the third embodiment includes adriving transistor Tdr, a selection transistor Tsl, a compensationtransistor Tcmp, and an emission control transistor Tel. One of a sourcearea and a drain area of the compensation transistor Tcmp is connectedto a gate node of the driving transistor Tdr, unlike the circuit of thefirst embodiment. Hereinafter, a specific structure of the organicelectroluminescent device 100 of the third embodiment will be described.In the drawings referred to in the following description, forconvenience of description, a size or scale of each the element isdifferent from that in an actual organic electroluminescent device 100.FIG. 22 is a sectional view of the organic electroluminescent device100, and FIGS. 23 to 30 are plan views illustrating a state of thesurface of the substrate 10 in respective steps of forming respectiveelements of the organic electroluminescent device 100 for one displaypixel Pe. A sectional view corresponding to a section including a lineXXII-XXII in FIGS. 23 to 30 corresponds to FIG. 22. Further, while FIGS.23 to 30 are plan views, each element that is the same as that in FIG. 4is conveniently hatched in the same aspect as that in FIG. 22 from theviewpoint of facilitation of visual recognition of each element.

As is understood from FIGS. 22 and 23, an active area 10A (source/drainarea) of each transistor T (Tdr, Tsl, Tel, or Tcmp) of the display pixelPe is formed on a surface of a substrate 10 formed of a semiconductormaterial such as silicon. Ions are implanted into the active area 10A.An active layer of each transistor T (Tdr, Tsl, Tel, or Tcmp) of thedisplay pixel Pe exists between the source area and the drain area andis implanted with different types of ions from those in the active area10A, but is integrally described as the active area 10A, forconvenience. The active area 10A and the active layer of the drivingtransistor Tdr and the emission control transistor Tel are arranged tobe aligned in a straight line shape in the channel length direction (Ydirection), unlike the first embodiment. As is understood from FIGS. 22and 24, the surface of the substrate 10 on which the active area 10A hasbeen formed is covered with an insulating film L0 (gate insulatingfilm), and a gate layer G (Gdr, Gsl, Gel, or Gcmp) of each transistor Tis formed on the surface of the insulating film L0. The gate layer G ofeach transistor T faces the active layer with the insulating film L0interposed therebetween.

As is understood from FIG. 22, a multilayer wiring layer in which aplurality of insulating layers L (LA to LD) and a plurality ofconductive layers (wiring layers) are alternately stacked is formed onthe surface of the insulating film L0 on which the gate layer G of eachtransistor T and the lower capacitive electrode layer CA1 have beenformed. Each insulating layer L is formed of, for example, an insulatinginorganic material such as a silicon compound (typically, siliconnitride or silicon oxide). In the following description, a relationshipin which a plurality of elements are collectively formed in the sameprocess through selective removal of the conductive layer (single layeror multiple layers) is indicated as “formed from the same layer”.

The insulating layer LA is formed on the surface of the insulating filmL0 on which the gate G of each transistor T has been formed. As isunderstood from FIGS. 22 and 25, a scanning line 22, a control line 27of the selection transistor Tsl, a control line 28 of the emissioncontrol transistor Tel, a capacitive electrode layer CA2, and aplurality of relay electrodes QB (QB3, QB4, QB6, and QB7) are formedfrom the same layer on the surface of the insulating layer LA.

As is understood from FIGS. 22 and 25, the relay electrode QB7 iselectrically connected to the active area 10A forming a drain area or asource area of the compensation transistor Tcmp, an active area 10Aforming a drain area or a source area of the driving transistor Tdr, andthe active area 10A forming a drain area or a source area of theemission control transistor Tdr via the conduction holes HA1, HA6, andHA7 penetrating the insulating film L0 and the insulating layer LA.Therefore, the relay electrode QB7 functions as a wiring portion thatconnects the drain area or the source area of the compensationtransistor Temp, the drain area or the source area of the drivingtransistor Tdr, and the drain area or the source area of the emissioncontrol transistor Tdr.

As is understood from FIGS. 22 and 25, a relay electrode QB3 iselectrically connected to the active area 10A forming the drain area orthe source area of the selection transistor Tsl via a conduction holeHA4 penetrating the insulating layer LA and the insulating film L0. Arelay electrode QB4 is electrically connected to the active area 10Aforming the drain area or the source area of the driving transistor Tdrvia a conduction hole HA5 penetrating the insulating film L0 and theinsulating layer LA. A relay electrode QB6 is electrically connected tothe active area 10A forming the source area or the drain area of theemission control transistor Tel via a conduction hole HA8 penetratingthe insulating layer LA and the insulating film L0.

As is understood from FIG. 25, the scanning line 22 is electricallyconnected to the gate layer Gsl of the selection transistor Tsl via aconduction hole HB2 penetrating the insulating layer LA. The scanningline 22 extends in a straight line shape in the X direction over theplurality of the display pixels Pe, and is electrically insulated fromthe signal line 26 to be described below by the insulating layer LB. Theconduction hole HB2 is arranged to overlap the gate layer Gsl and theactive layer of the selection transistor Tsl.

As is understood from FIG. 25, the control line 27 of the compensationtransistor Tcmp is electrically connected to the gate layer Gcmp of thecompensation transistor Tcmp via a conduction hole HB1 penetrating theinsulating layer LA. The control line 27 extends in a straight lineshape in the X direction over a plurality of the display pixels Pe, andis electrically insulated from the signal line 26 to be described belowby the insulating layer LB. The conduction hole HB1 is arranged tooverlap the gate layer Gcmp and the active layer of the compensationtransistor Temp.

As is understood from FIG. 25, the control line 28 of the emissioncontrol transistor Tel is electrically connected to the gate layer Gelof the emission control transistor Tel via a conduction hole HB4 formedin the insulating layer LA. The control line 28 extends in a straightline shape in the X direction over a plurality of the display pixels Pe,and is electrically insulated from the signal line 26 to be describedbelow by the insulating layer LA. The conduction hole HB4 is arranged tooverlap the gate layer Gel and the active layer of the emission controltransistor Tel.

As is understood from FIGS. 22 and 25, in this embodiment, a capacitiveelectrode layer CA2 is formed on the same layer as the relay electrodesQB3, QB4, QB6, and QB7, the scanning line 22, and the control lines 27and 28. The capacitive electrode layer CA2 is electrically connected tothe gate layer Gdr of the driving transistor Tdr via the conduction holeHB3 penetrating the insulating layer LA. Further, the capacitiveelectrode layer CA2 is electrically connected to the active area 10Aforming the drain area or the source area of the compensation transistorTcmp and the active area 10A forming the drain area or the source areaof the selection transistor Tsl via the conduction holes HA2 and HA3penetrating the insulating film L0 and the insulating layer LA.Therefore, the capacitive electrode layer CA2 also functions as a wiringlayer for the gate layer Gdr of the driving transistor Tdr, the drainarea or the source area of the compensation transistor Temp, and thedrain area or the source area of the selection transistor Tsl. Theconduction hole HB3 is arranged to overlap the gate layer Gdr and theactive layers of the driving transistor Tdr.

The insulating layer LB is formed on the surface of the insulating layerLA on which the scanning line 22, the control line 27 of the selectiontransistor Tsl, the control line 28 of the emission control transistorTel, the plurality of relay electrodes QB (QB3, QB4, QB6, and QB7), andthe capacitive electrode layer CA2 have been formed. As is understoodfrom FIGS. 22 and 26, a first power supply line layer 41-0 is formed onthe surface of the insulating layer LB. Further, as is understood fromFIG. 22, an insulating layer LC1 is formed on the surface of theinsulating layer LC0 on which the first power supply line layer 41-0 hasbeen formed. A first power supply line layer 41-1 connected to the firstpower supply line layer 41-0, the relay electrode QD2, and the relayelectrode QD4 are formed on a surface of the insulating layer LC1, asillustrated in FIGS. 22 and 26. As is understood from FIGS. 22, 25 and26, a relay electrode QD2 is electrically connected to the relayelectrode QB6 via the conduction hole HD3 penetrating the insulatinglayer LB and the insulating layer LC0. The relay electrode QD2 is one ofthe relay electrodes constituting the pixel electrode conductionportion, and is electrically connected to the active area 10A formingthe drain area or the source area of the emission control transistor Telvia the conduction hole HD3, the relay electrode QB6, and the conductionhole HA8, as is understood from FIGS. 22 to 26.

As is understood from FIGS. 22, 25 and 26, the relay electrode QD4 iselectrically connected to the relay electrode QB3 via the conductionhole HD4 penetrating the insulating layer LB and the insulating layerLC0. Thus, as is understood from FIGS. 22 to 26, the relay electrode QD4is electrically connected to the active area 10A forming the drain areaor the source area of the selection transistor Tsl via the conductionhole HD4, the relay electrode QB3, and the conduction hole HA4.

The first power supply line layer 41-1 is arranged to surround the pixelelectrode conduction portion (a conduction portion between the emissioncontrol transistor Tel and the relay electrode QD2), as is understoodfrom FIG. 26. The first power supply line layer 41-1 is arranged tosurround the relay electrode QD4, as is understood from FIG. 26.Further, the first power supply line layer 41-1 is a pattern formed tobe continuous without a gap from the display pixels Pe adjacent in X andY directions. The first power supply line layer 41 is electricallyconnected to the mounting terminal 36 to which the power supplypotential Vel on the high level side is supplied, via a wiring (notillustrated) within the multilayer wiring layer. Further, the firstpower supply line layer 41-1 is formed in the display area 16 of thefirst area 12 illustrated in FIG. 1. Further, although not shown,another supply line layer is also formed in the peripheral area 18 ofthe first area 12. This power supply line layer is electricallyconnected to the mounting terminal 36 to which the power supplypotential Vet on a low level side is supplied, via the wiring (notillustrated) within the multilayer wiring layer. The first power supplyline layer 41-1 and the power supply line layer to which a power supplypotential Vct on a low level side is supplied are formed of a conductivematerial containing, for example, silver or aluminum and to a thicknessof, for example, about 100 nm.

The first power supply line layer 41-0 is connected to the first powersupply line layer 41-1. The first power supply line layer 41-0 isarranged at a predetermined interval from the relay electrode and at apredetermined interval from the conduction hole HD5 and the relayelectrodes QD2 and QD4 in the Y direction, as is understood from FIG.26. The first power supply line layer 41-0 is a rectangular electrodelayer arranged at a predetermined interval from the upper power supplyline layer 41-0 of the display pixel Pe adjacent in the X direction. Thefirst power supply line layer 41-0 and the first power supply line layer41-1 are insulated from the capacitive electrode layer CA2 by theinsulating layer LB and the insulating layer LC0. The first power supplyline layer 41-0 has a structure suspended from the first power supplyline layer 41-1, as is understood from FIG. 22. The first power supplyline layer 41-0 is electrically connected to the source area or thedrain area of the driving transistor Tdr via the first power supply linelayer 41-1. Further, the first power supply line layer 41-0 faces thecapacitive electrode layer CA2 via the insulating layer LB and theinsulating layer LC0. The capacitive electrode layer CA2 is electricallyconnected to the gate layer Gdr of the driving transistor Tdr via theconduction hole HB3. Therefore, the first power supply line layer 41-0corresponds to the second capacitive electrode C2 of the capacitiveelement C illustrated in FIGS. 2 and 3. The capacitive electrode layerCA2 corresponds to the first capacitive electrode C1 of the capacitiveelement C illustrated in FIGS. 2 and 3. Therefore, since the first powersupply line layer 41-0 constituting the second capacitive electrode C2of the capacitive element C has the structure suspended from the firstpower supply line layer 41-1, it is possible to obtain a thin dielectricfilm of the capacitive element C and to obtain greater capacitance ofthe capacitive element C. It is possible to increase a degree of freedomof the arrangement, as compared to a case in which the first powersupply line layer 41-1 is used alone. As described above, in thisembodiment, the capacitive element C includes the first power supplyline layer 41-0, the insulating layer LB, and the capacitive electrodelayer CA2.

The first power supply line layer 41-1 is electrically connected to therelay electrode QB4 via the conduction hole HD5 penetrating theinsulating layer LC0 and the insulating layer LB, as is understood fromFIGS. 22, 25 and 26. Therefore, the first power supply line layer 41-1is electrically connected to the source area or the drain area of thedriving transistor Tdr via the conduction hole HD5, the relay electrodeQB4, and the conduction hole HA5, as is understood from FIGS. 22 to 26.

The insulating layer LD is formed on the surface of the insulating layerLC on which the first power supply line layer 41-1 and the plurality ofrelay electrodes QD (QD2 and QD4) have been formed. As is understoodfrom FIGS. 22 and 27, the signal line 26 and the relay electrode QF1 areformed on the surface of the insulating layer LC1. The signal line 26extends in a straight line shape in the Y direction over a plurality ofpixels P, and is electrically insulated from first power supply linelayer 41-1 by the insulating layer LC1. The signal line 26 iselectrically connected to the active area 10A forming the source area orthe drain area of the selection transistor Tsl via the conduction holeHF11, the relay electrode QD4, the conduction hole HD4, the relayelectrode QB3, and the conduction hole HA4, as is understood from FIGS.22 to 27. Further, the signal line 26 is formed to pass throughpositions of a layer over the scanning line 22, the control line 27, andthe control line 28, and extends in a direction (Y direction) of achannel length of the selection transistor Tsl. Further, the signal line26 is arranged to overlap the selection transistor Tsl and thecompensation transistor Tcmp in a plan view. Therefore, it is possibleto achieve high density of the pixels. Further, the signal line 26 isarranged to overlap a gap between the first power supply line layer 41-1and the relay electrode QD4 in a plan view. Therefore, there is anadvantage in that the intrusion of external light is prevented by thesignal line 26, and the leakage of a current of each transistor T causedby light irradiation can be prevented.

The relay electrode QF1 is one of the relay electrodes constituting thepixel electrode conduction portion, and is electrically connected to theactive area 10A forming the drain area or the source area of theemission control transistor Tel via the conduction hole HF4 penetratingthe insulating layer LC1, the relay electrode QD2, the conduction holeHD3, the relay electrode QB6, and the conduction hole HA8, as isunderstood from FIGS. 22 to 27.

The insulating layer LD is formed on the surface of the insulating layerLC1 on which the signal line 26 and the relay electrode QF1 have beenformed. A planarization process is executed for the surface of theinsulating layer LD. In the planarization process, a known surfaceprocessing technology such as chemical mechanical polishing (CMP) isoptionally adopted. The reflective layer 55 is formed on the surface ofthe insulating layer LD highly planarized in the planarization process,as illustrated in FIGS. 22 and 28. The reflective layer 55 iselectrically connected to the relay electrode QF1 via the conductionhole HG1 penetrating the insulating layer LD, as is understood fromFIGS. 27 and 28. Therefore, the reflective layer 55 is electricallyconnected to the pixel electrode conduction portion (a conductionportion between the emission control transistor Tel and the relayelectrode QF1). The reflective layer 55 is separately formed in eachdisplay pixel Pe, similarly to the first electrode E1. In thisembodiment, the reflective layer 55 is formed of an optically reflectingconductive material containing, for example, silver or aluminum and to afilm thickness of, for example, about 100 nm. The reflective layer 55may be formed of an optically reflecting conductive material is arrangedto cover each transistor T, each wiring, and each relay electrode, asillustrated in FIG. 28. Therefore, there is an advantage in that theintrusion of external light can be prevented by the reflective layer 55,and the leakage of a current of each transistor T caused by lightirradiation can be prevented.

As illustrated in FIG. 22, the optical path adjustment layer 60 isformed on the surface of the insulating layer LD on which the reflectivelayer 55 has been formed. The optical path adjustment layer 60 is alight transmissive film body that defines a resonance wavelength (thatis, display color) of the resonant structure of each display pixel Pe.The resonance wavelengths of the resonant structures are substantiallythe same in the pixels having the same display colors, and the resonancewavelengths of the resonant structures are set to be different from eachother in the pixels having different display colors.

As illustrated in FIGS. 22 and 29, a first electrode E1 of each displaypixel Pe in the display area 16 is formed on a surface of the opticalpath adjustment layer 60. The first electrode E1 is formed of a lighttransmissive conductive material such as ITO (Indium Tin Oxide). Thefirst electrode E1 is a substantially rectangular electrode (pixelelectrode) functioning as a positive electrode of the light emittingelement 45, as has been described above with reference to FIGS. 2 and 3.The first electrode E1 is electrically connected to the reflective layer55 via the conduction hole HH1 formed in the optical path adjustmentlayer 60 in each display pixel Pe, as is understood from FIGS. 22 and29.

The pixel definition layer 65 is formed over the entire area of thesubstrate 10 on a surface of the optical path adjustment layer 60 onwhich the first electrode E1 has been formed, as illustrated in FIGS. 22and 30. The pixel definition layer 65 is formed of, for example, aninsulating inorganic material such as a silicon compound (typically,silicon nitride or silicon oxide). As is understood from FIG. 30, anopening 65A corresponding to each of the first electrodes E1 in thedisplay area 16 is formed in the pixel definition layer 65. An area nearan inner periphery of the opening 65A in the pixel definition layer 65overlaps the periphery of the first electrode E1. That is, the innerperiphery of the opening 65A is located on an inner side of theperiphery of the first electrode E1 in a plan view. The respectiveopenings 65A are the same in a plan shape (rectangular shape) or a size,and are arranged in a matrix shape with the same pitch in each of X andY directions. As is understood from the above description, the pixeldefinition layer 65 is formed in a grid shape in a plan view. Further,the plan shapes or the sizes of the openings 65A may be the same as oneanother when display colors are the same as one another and may bedifferent from one another when the display colors are different fromone another. Further, the pitches of the openings 65A are the same asone another when the display colors are the same as one another, and maybe different from one another when the display colors are different fromone another.

Further, although detailed description is omitted, the light emittingfunction layer 46, the second electrode E2, and the sealing body 47 arestacked on the layer over the first electrode E1, and a sealingsubstrate (not illustrated) is bonded to a surface of the substrate 10in which the respective elements have been formed, for example, using anadhesive. The sealing substrate is a light transmissive plate-shapedmember (for example, a glass substrate) for protecting each element onthe substrate 10. Further, a color filter can be formed in each displaypixel Pe on the surface of the sealing substrate or the surface of thesealing body 47.

As described above, in the present embodiment, the first power supplyline layer 41-1 is arranged between the layer on which the scanning line22, the control line 27, the control line 28, and the capacitiveelectrode layer CA2 have been formed and the layer on which the signalline 26 has been formed. Therefore, coupling between the signal line 26and the scanning line 22 is suppressed by the first power supply linelayer 41-1. Further, coupling between the signal line 26 and eachtransistor or the capacitive electrode layer CA2 is suppressed by thefirst power supply line layer 41-1. Further, in this embodiment, thefirst power supply line layer 41-1 is arranged between the capacitiveelectrode layer CA2 and the first electrode E1 that is a pixelelectrode. The first power supply line layer 41-1 is formed over thesubstantially entire surface other than the pixel conduction portiondescribed above. Therefore, coupling between the capacitive electrodelayer CA2 connected to the gate layer Gdr driving transistor Tdr and thefirst electrode E1 that is a pixel electrode is suppressed.

The signal line conduction portion which connects the signal line 26 tothe drain area or the source area of the selection transistor Tsl isprovided through the layer on which the first power supply line layer41-1 has been formed and the layer on which the scanning line 22 and thecapacitive electrode layer CA2 have been formed, as described above.This signal line conduction portion is a drain wiring or a source wiringof the selection transistor Tsl. Through such a configuration, it ispossible to connect the selection transistor Tsl to the signal line 26with less resistance, as compared to a case in which conduction isachieved by extending the signal line 26 to the lower layer. Further,the signal line conduction portion and the signal line 26 are arrangedwhile avoiding the pixel electrode conduction portion.

The conduction portion between the first electrode E1 that is a pixelelectrode and the source area or the drain area of the emission controltransistor Tel, that is, the pixel electrode conduction portion includesthe conduction hole HA8 penetrating the insulating film L0 and theinsulating layer LA, the relay electrode QB6, the conduction hole HC5penetrating the insulating layer LB and the insulating layer LD0, therelay electrode QD2, the conduction hole HF4 penetrating the insulatinglayer LC1, the relay electrode QF1, the conduction hole HG1 penetratingthe insulating layer LD, the reflective layer 55, and the conductionhole HH1 penetrating the optical path adjustment layer 60. Thesefunctions as a source wiring or a drain wiring of the emission controltransistor Tel. That is, the conduction portion between the firstelectrode E1 and the source area or the drain area of the emissioncontrol transistor Tel includes the source wiring or the drain wiring ofthe emission control transistor Tel provided through the first powersupply line layer 41, the capacitive electrode layer CA2, and the firstpower supply line layer 41-1. Therefore, the source area or the drainarea of the emission control transistor Tel can be connected to thefirst electrode E1 that is the pixel electrode with less resistance, ascompared to a case in which the pixel electrode extends to the layer ofthe source area or the drain area of the emission control transistor Telto achieve the conduction.

The capacitive element C has a configuration in which the capacitiveelement in which the first power supply line layer 41-0 is the secondcapacitive electrode C2, and the capacitive electrode layer CA2 is thefirst capacitive electrode C1 is stacked in a stacking direction (Zdirection). In the first capacitive element C-1, the first power supplyline layer 41-0 which is the second capacitive electrode C2 iselectrically connected to the first power supply line layer 41-1, andarranged on a layer under the first power supply line layer 41-1. In theabove-described example, for example, this arrangement is realized by astructure suspended from the first power supply line layer 41-1.Therefore, it is possible to obtain a thinner dielectric layer of thefirst capacitive element C-1 and to obtain greater capacitance of thefirst capacitive element C-1, as compared to a case in which the firstpower supply line layer 41-1 formed on the same layer as the relayelectrode is used as the second capacitive electrode C2. Alternatively,it is possible to enhance a degree of freedom of an arrangement of thefirst capacitive element C-1.

Further, the capacitive element C is arranged to overlap the selectiontransistor Tsl, the compensation transistor Tcmp, and the drivingtransistor Tdr in a plan view. Therefore, it is easy to achieve a highdensity of pixels.

In this embodiment, the capacitive electrode layer CA2 is formed on thelayer on which the scanning line 22 is formed. With this configuration,it is possible to achieve simplification of the process, unlike thefirst and second embodiments. Further, since the first power supply linelayer 41-1 is arranged on the layer on which the scanning line 22 hasbeen formed, and the signal line 26 is arranged on the layer, the signalline 26 can be arranged to overlap the selection transistor Tsl and thecompensation transistor Tcmp in a plan view. As a result, it is possibleto achieve high density of the pixels.

In this embodiment, the reflective layer 55 is connected to the firstelectrode E1 that is a pixel electrode, as in the second embodiment.There is an advantage in that the potential of the first electrode E1that is a pixel electrode and the reflective layer 55 is lesssusceptible to the potential of the signal line 26 since a potential ofthe first electrode E1 that is a pixel electrode is set according to thepotential of the driving transistor Tdr or the light emitting element45.

Further, with the common components of the first and second embodiments,it is possible to achieve the same effects as in the first embodimentand the second embodiment described above. Further, in the thirdembodiment, the same modification example as that described in the firstembodiment is also applicable.

Fourth Embodiment

A fourth embodiment of the invention will be described. Further, in eachform to be illustrated below, elements having the same operation orfunction as in the first to third embodiment are denoted with the signsreferred to in the description of the first to third embodiments, andeach detailed description will be appropriately omitted.

A specific structure of the organic electroluminescent device 100 of thefourth embodiment is substantially the same structure as the specificstructure of the organic electroluminescent device 100 of the thirdembodiment. Hereinafter, only a difference will be described forsimplification.

FIG. 31 is a sectional view of the organic electroluminescent device100, and FIGS. 32 to 40 are plan views illustrating a state of thesurface of the substrate 10 in respective steps of forming respectiveelements of the organic electroluminescent device 100 for one displaypixel Pe. A sectional view corresponding to a section including a lineXXXI-XXXI in FIGS. 32 to 40 corresponds to FIG. 31. Further, while FIGS.32 to 40 are plan views, each element that is the same as that in FIG.31 is conveniently hatched in the same aspect as that in FIG. 31 fromthe viewpoint of facilitation of visual recognition of each element.

The fourth embodiment is different from the third embodiment in that anupper capacitive electrode layer CA1 is arranged between the layer onwhich the capacitive electrode layer CA2 and the scanning line 22 havebeen formed and the layer on which the signal line 26 has been formed,as is understood from FIGS. 31 to 36. The capacitive electrode layer CA1is a rectangular capacitive electrode layer arranged to cover eachtransistor in a plan view, as is understood from FIG. 35. As isunderstood from FIGS. 31, 34 and 35, the capacitive electrode layer CA1is electrically connected to the gate layer Gdr of the drivingtransistor Tdr via the conduction hole HC7 penetrating the insulatinglayer LB, the capacitive electrode layer CA2, and the conduction holeHB3 penetrating the insulating layer LA. Therefore, the capacitiveelectrode layer CA1 corresponds to the first capacitive electrode C1 ofthe capacitive element C illustrated in FIGS. 2 and 3 together with thecapacitive electrode layer CA2, and the first power supply line layer41-1 corresponds to the second capacitive electrode C2 of the capacitiveelement C illustrated in FIGS. 2 and 3.

In the present embodiment, since the upper capacitive electrode layerCA1 is formed between the layer on which each transistor has been formedand the layer on which the scanning line 22 and the control lines 27 and28 have been formed, and the layer on which the signal line 26 has beenformed as described above, the upper capacitive electrode layer CA1 canbe arranged without being relatively bound by arrangement of thetransistor or the wiring. Further, since stacking with the layer onwhich the scanning line 22 or the control lines 27 and 28 have beenformed is possible, a high density of pixels is easily achieved.

The upper capacitive electrode layer CA1 connected to the gate layer Gdrof the driving transistor Tdr is provided on a layer over the gate layerGdr of the driving transistor Tdr, and the first power supply line layer41-1 is arranged between the upper capacitive electrode layer CA1 andthe signal line 26. The first power supply line layer 41-1 is formedover a substantially entire surface other than a conduction portionbetween the first electrode E1 that is a pixel electrode and the sourcearea or the drain area of the emission control transistor Tel, that is,the pixel electrode conduction portion. Therefore, coupling between thesignal line 26 as a noise source and the upper capacitive electrodelayer CA1 connected to the gate layer Gdr of the driving transistor Tdris suppressed.

In this embodiment, the upper power supply line layer 41-1 and the upperpower supply line layer 41-0 are arranged between the upper capacitiveelectrode layer CA1 and the first electrode E1 that is a pixelelectrode. The upper power supply line layer 41-1 and the upper powersupply line layer 41-0 are formed over the substantially entire surfaceother than the pixel conduction portion described above. Therefore,coupling between the capacitive electrode layer CA1 connected to thegate layer Gdr of the driving transistor Tdr and the first electrode E1that is a pixel electrode is suppressed.

The conduction portion between the first electrode E1 that is a pixelelectrode and the source area or the drain area of the emission controltransistor Tel, that is, the pixel electrode conduction portion includesthe conduction hole HA8 penetrating the insulating film L0 and theinsulating layer LA, the relay electrode QB6, the conduction hole HC5penetrating the insulating layer LB, the relay electrode QC3, theconduction hole HD3 penetrating the insulating layer LC and theinsulating layer LD0, the relay electrode QD2, the conduction hole HF4penetrating the insulating layer LD1, the relay electrode QF1, theconduction hole HG1 penetrating the insulating layer LE, and thereflective layer 55. These function as a source wiring or a drain wiringof the emission control transistor Tel. That is, the conduction portionbetween the first electrode E1 and the source area or the drain area ofthe emission control transistor Tel includes the first power supply linelayer 41-1, the upper capacitive electrode layer CA1, and the sourcewiring or the drain wiring of the emission control transistor Telprovided through the upper power supply line layer 43-1 and the upperpower supply line layer 43-0. Therefore, the source area or the drainarea of the emission control transistor Tel can be connected to thefirst electrode E1 that is the pixel electrode with less resistance, ascompared to a case in which the pixel electrode extends to the layer ofthe source area or the drain area of the emission control transistor Telto achieve the conduction.

The capacitive element C in the present embodiment is a capacitiveelement C in which the upper power supply line layer 41-0 is the secondcapacitive electrode C2 and the capacitive electrode layer CA1 is thefirst capacitive electrode C1. In the capacitive element C, the upperpower supply line layer 41-0 that is the second capacitive electrode C2is configured to be electrically connected to the upper power supplyline layer 41-1 and arranged on a layer under the upper power supplyline layer 41-1. In the above example, for example, this arrangement isrealized using a structure suspended from the upper power supply linelayer 41-1. Therefore, it is possible to obtain a thinner dielectriclayer of the capacitive element C and greater capacitance of thecapacitive element C as compared to a case in which the upper powersupply line layer 41-1 formed on the same layer as the relay electrodeis used as the second capacitive electrode C2. Alternatively, it ispossible to increase a degree of freedom of the arrangement of thecapacitive element C.

As is understood from FIG. 35, the capacitive element C is provided inpositions overlapping the selection transistor Tsl, the emission controltransistor Tel, the compensation transistor Tcmp, and the drivingtransistor Tdr in a plan view. Thus, it is possible to achieve a highdensity of pixels while securing the capacitance of the capacitiveelement. Thus, according to this embodiment, it is possible toeffectively utilize the layer over the gate layer Gdr of the drivingtransistor Tdr and provide a pixel structure for high-density pixels.

In this embodiment, the reflective layer 55 is connected to the firstelectrode E1 that is a pixel electrode, as in the third embodiment.There is an advantage in that the potential of the first electrode E1that is a pixel electrode and the reflective layer 55 is lesssusceptible to the potential of the signal line 26 since a potential ofthe first electrode E1 that is a pixel electrode is set according to thepotential of the driving transistor Tdr or the light emitting element45.

The signal line conduction portion which connects the signal line 26 tothe drain area or the source area of the selection transistor Tsl isprovided through the layer on which the first power supply line layer41-1 has been formed and the layer on which the scanning line 22 and thecapacitive electrode layer CA2 have been formed, as in the thirdembodiment. This signal line conduction portion is a drain wiring or asource wiring of the selection transistor Tsl. Through such aconfiguration, it is possible to connect the selection transistor Tsl tothe signal line 26 with less resistance, as compared to a case in whichconduction is achieved by extending the signal line 26 to the lowerlayer. Further, the signal line conduction portion and the signal line26 are arranged while avoiding the pixel electrode conduction portion.

In this embodiment, the signal line 26 is also arranged to overlap theselection transistor Tsl and the compensation transistor Tcmp in a planview, as is understood from FIG. 37. As a result, it is possible toachieve high density of the pixels. The signal line 26 is arranged tooverlap a gap between the first power supply line layer 41-1 and therelay electrode QD4 in a plan view. Therefore, there is an advantage inthat the intrusion of external light is prevented by the signal line 26,and the leakage of a current of each transistor T caused by lightirradiation can be prevented.

Further, with the same configuration as those in the first to thirdembodiments, it is possible to achieve the same effects as those in thefirst to third embodiments described above. Further, in the fourthembodiment, the same modification example as the modification exampledescribed in the first embodiment is also applicable. For example, theelectrode constituting the upper capacitive electrode layer may be anelectrode formed on a layer different from the upper capacitiveelectrode layer CA1.

Fifth Embodiment

The fifth embodiment of the invention will be described. Further, ineach form to be illustrated below, elements having the same operation orfunction as in the first embodiment are denoted with the signs referredto in the description of the first to fourth embodiments, and eachdetailed description will be appropriately omitted.

A specific structure of the organic electroluminescent device 100 of thefifth embodiment is substantially the same structure as the specificstructure of the organic electroluminescent device 100 of the third andfourth embodiments. Hereinafter, only a difference will be described forsimplification.

FIG. 41 is a sectional view of the organic electroluminescent device100, and FIGS. 42 to 51 are plan views illustrating a state of thesurface of the substrate 10 in respective steps of forming respectiveelements of the organic electroluminescent device 100 for one displaypixel Pe. A sectional view corresponding to a section including a lineXLI-XLI in FIGS. 42 to 51 corresponds to FIG. 41. Further, while FIGS.42 to 51 are plan views, each element that is the same as that in FIG.41 is conveniently hatched in the same aspect as that in FIG. 41 fromthe viewpoint of facilitation of visual recognition of each element.

The fifth embodiment is different from the third and fourth embodimentsin that a capacitive electrode layer CA0 and a capacitive electrodelayer CA1, and an upper power supply line layer 43-0 and an upper powersupply line layer 43-1 are arranged between the layer on which the firstpower supply line layer 41 has been formed and the layer on which thesignal line 26 has been formed, as is understood from FIGS. 41 to 48.

As is understood from FIG. 41, the insulating layer LC is formed on thesurface of the insulating layer LB on which the first power supply linelayer 41 has been formed. The capacitive electrode layer CA0 is formedon a surface of the insulating layer LC, and the insulating layer LD0 isformed on the surface of the insulating layer LC on which the capacitiveelectrode layer CA0 has been formed. A capacitive electrode layer CA1, arelay electrode QE4 constituting a pixel electrode conduction portion, arelay electrode QE1 constituting a signal line conduction portion, and arelay electrode QE12 constituting a power supply unit are formed on thesurface of the insulating layer LD0, as is understood from FIG. 46. Thecapacitive electrode layer CA1 is a rectangular capacitive electrodelayer arranged to cover each transistor in a plan view, as is understoodfrom FIG. 46. The capacitive electrode layer CA1 is connected to thecapacitive electrode layer CA0 suspended from the capacitive electrodelayer CA1, as is understood from FIG. 41. As is understood from FIGS.41, and 43 to 46, the capacitive electrode layer CA1 is electricallyconnected to the gate layer Gdr of the driving transistor Tdr via theconduction hole HE4 penetrating the insulating layer LD0 and theinsulating layer LC, a relay electrode QD5, the conduction hole HD2penetrating the insulating layer LB, a relay electrode QB8, and theconduction hole HB3 penetrating the insulating layer LA. Further, thefirst power supply line layer 41 is arranged to surround the relayelectrode QD5.

As is understood from FIGS. 41 and 47, the insulating layer LD1 isformed on the surface of the insulating layer LD0 on which thecapacitive electrode layer CA1, the relay electrode QE4 constituting thepixel electrode conduction portion, the relay electrode QE11constituting the signal line conduction portion, and the relay electrodeQE12 constituting the power supply unit have been formed. As isunderstood from FIG. 41, the upper power supply line layer 43-0 isformed on a surface of the insulating layer LD1. The insulating layerLE0 is formed on the surface of the insulating layer LD1 on which theupper power supply line layer 43-0 has been formed, and the upper powersupply line layer 43-1, and the relay electrode QF1 constituting animage electrode conduction portion are formed on the surface of theinsulating layer LE0, as is understood from FIG. 47.

The upper power supply line layer 43-1 is arranged to surround the pixelelectrode conduction portion (a conduction portion between the emissioncontrol transistor Tel and the relay electrode QF1), as is understoodfrom FIG. 47. Further, the upper power supply line layer 43-1 is apattern provided for each pixel. The upper power supply line layer 43-0is connected to the upper power supply line layer 43-1, and is arectangular electrode layer arranged at a predetermined interval fromthe pixel electrode conduction portion and the signal line conductionportion in the Y direction and arranged at a predetermined interval fromthe upper power supply line layer 43-0 of the adjacent display pixel Pein the X direction, as is understood from FIG. 47. The upper powersupply line layer 43-0 and the upper power supply line layer 43-1 areinsulated from the capacitive electrode layer CA1 by the insulatinglayer LE0 and the insulating layer LD1. The upper power supply linelayer 43-0 has a structure suspended from the upper power supply linelayer 43-1, as is understood from FIG. 41. The upper power supply linelayer 43-0 is electrically connected to the first power supply linelayer 41 via the upper power supply line layer 43-1 and electricallyconnected to the source area or the drain area of the driving transistorTdr, as is understood from FIG. 41. Further, the upper power supply linelayer 43-0 faces the capacitive electrode layer CA0 via the insulatinglayer LD1 and the insulating layer LD0. The capacitive electrode layerCA0 is electrically connected to the gate layer Gdr of the drivingtransistor Tdr via the capacitive electrode layer CA1. Therefore, theupper power supply line layer 43-0 corresponds to the second capacitiveelectrode C2 of the capacitive element C illustrated in FIGS. 2 and 3,and the capacitive electrode layer CA0 corresponds to the firstcapacitive electrode C1 of the capacitive element C illustrated in FIGS.2 and 3. Therefore, since the upper power supply line layer 43-0constituting the second capacitive electrode C2 of the capacitiveelement C has a structure suspended from the upper power supply linelayer 43-1, it is possible to obtain a thinner dielectric layer of thecapacitive element C and to obtain greater capacitance of the capacitiveelement C. It is possible to increase a degree of freedom of thearrangement as compared to a case in which the upper power supply linelayer 43-1 is used alone. Further, in this example, since the capacitiveelectrode layer CA0 constituting the first capacitive electrode C1 ofthe capacitive element C has a structure suspended from the capacitiveelectrode layer CA1 as described above, it is possible to furtherincrease the capacitance of the capacitive element C as a whole. Asdescribed above, in this embodiment, the capacitive element C includingthe first power supply line layer 41, the insulating layer LC, and thecapacitive electrode layer CA0, and the capacitive element C includingthe capacitive electrode layer CA0, the insulating layer LD0, theinsulating layer LD1, and the upper power supply line layer 43-0 arestacked in a stacking direction (Z direction).

As described above, in this embodiment, the capacitive electrode layerCA1 connected to the gate layer Gdr of the driving transistor Tdr, andthe capacitive electrode layer CA0 connected to the capacitive electrodelayer CA1 are provided on a layer over the gate layer Gdr of the drivingtransistor Tdr, and the first power supply line layer 41 is arrangedbetween the capacitive electrode layer CA1 and the capacitive electrodelayer CA0, and the signal line 26 connected to the drain area or thesource area of the selection transistor Tsl. The first power supply linelayer 41 is formed over the substantially entire surface other than theconduction portion between the first electrode E1 that is a pixelelectrode and the source area or the drain area of the emission controltransistor Tel, that is, the pixel electrode conduction portion and thegate conduction portion of the driving transistor Tdr. Therefore,coupling between the signal line 26 that is a noise source, and thecapacitive electrode layer CA1 and the capacitive electrode layer CA0connected to the gate layer Gdr of the driving transistor Tdr issuppressed.

Further, while the scanning line 22 connected to the gate layer Gsl ofthe selection transistor Tsl is arranged on the layer under the signalline 26, the first power supply line layer 41 is arranged between thescanning line 22, and the capacitive electrode layer CA1 and thecapacitive electrode layer CA0. The first power supply line layer 41 isformed over the substantially entire surface to cover the scanning line22. Therefore, coupling between the scanning line 22 that becomes anoise source, and the capacitive electrode layer CA1 and the capacitiveelectrode layer CA0 connected to the gate layer Gdr of the drivingtransistor Tdr is suppressed.

In this embodiment, the upper power supply line layer 43-1 and the upperpower supply line layer 43-0 are arranged between the capacitiveelectrode layer CA1 and the capacitive electrode layer CA0, and thefirst electrode E1 that is a pixel electrode. The upper power supplyline layer 43-1 and the upper power supply line layer 43-0 are formedover the substantially entire surface other than the pixel conductionportion described above. Therefore, coupling between the capacitiveelectrode layer CA1 and the capacitive electrode layer CA0 connected tothe gate layer Gdr of the driving transistor Tdr, and the firstelectrode E1 that is a pixel electrode is suppressed.

The pixel electrode conduction portion includes a plurality of relayelectrodes and a plurality of conduction holes, as described above, andfunctions as a source wiring or a drain wiring of the emission controltransistor Tel. That is, the conduction portion between the firstelectrode E1 and the source area or the drain area of the emissioncontrol transistor Tel includes the source wiring or the drain wiring ofthe emission control transistor Tel provided through the first powersupply line layer 41, the capacitive electrode layer CA1 and thecapacitive electrode layer CA0, and the upper power supply line layer43-1 and the upper power supply line layer 43-0. Therefore, the sourcearea or the drain area of the emission control transistor Tel can beconnected to the first electrode E1 that is the pixel electrode withless resistance, as compared to a case in which the pixel electrodeextends to the layer of the source area or the drain area of theemission control transistor Tel to achieve the conduction.

The signal line conduction portion which connects the signal line 26 tothe drain area or the source area of the selection transistor Tsl isprovided through the layer on which the first power supply line layer41-1 has been formed and the layer on which the scanning line 22 and thecapacitive electrode layer CA2 have been formed, as described above.This signal line conduction portion is a drain wiring or a source wiringof the selection transistor Tsl. Through such a configuration, it ispossible to connect the selection transistor Tsl to the signal line 26with less resistance, as compared to a case in which conduction isachieved by extending the signal line 26 to the lower layer. Further,the signal line conduction portion and the signal line 26 are arrangedwhile avoiding the pixel electrode conduction portion.

In this embodiment, the signal line 26 is arranged to overlap theselection transistor Tsl and the compensation transistor Tcmp in a planview. As a result, it is possible to achieve high density of the pixels.

Further, with the same configuration as that in each embodimentdescribed above, it is possible to achieve the same effects as in eachembodiment described above. Further, the same modification example asthat described in the first embodiment is also applicable in the fifthembodiment.

Sixth Embodiment

A sixth embodiment of the invention will be described. Further, in eachform to be illustrated below, elements having the same operation orfunction as in the first embodiment are denoted with the signs referredto in the description of each embodiment described above, and eachdetailed description will be appropriately omitted.

A circuit of each display pixel Pe of the sixth embodiment has aconfiguration in which the compensation transistor Tcmp is omitted, asillustrated in FIG. 52. Hereinafter, a specific structure of the organicelectroluminescent device 100 of the sixth embodiment will be described.In each drawing to be referred in the following description, a dimensionor a scale of each element is different from that in an actual organicelectroluminescent device 100 for convenience of description. FIG. 53 isa sectional view of the organic electroluminescent device 100, and FIGS.54 to 62 are plan views illustrating a state of the surface of thesubstrate 10 in respective steps of forming respective elements of theorganic electroluminescent device 100 for one display pixel Pe. Asectional view corresponding to a section including a line LIII-LIII inFIGS. 54 to 62 corresponds to FIG. 53. Further, while FIGS. 54 to 62 areplan views, each element that is the same as that in FIG. 53 isconveniently hatched in the same aspect as that in FIG. 53 from theviewpoint of facilitation of visual recognition of each element.

As is understood from FIGS. 53 and 54, an active area 10A (source/drainareas) of each transistor T (Tdr, Tsl, or Tel) of the display pixel Peis formed on the surface of the substrate 10 formed of a semiconductormaterial such as silicon. Ions are implanted into the active area 10A.An active layer of each transistor T (Tdr, Tsl, or Tel) of the displaypixel Pe exists between the source area and the drain area and isimplanted with different types of ions from those in the active area10A, but is integrally described as the active area 10A, forconvenience. As is understood from FIGS. 53 and 55, the surface of thesubstrate 10 on which the active area 10A has been formed is coveredwith an insulating film L0 (gate insulating film), and a gate layer G(Gdr, Gsl or Gel) of each transistor T is formed on the surface of theinsulating film L0. The gate layer G of each transistor T faces theactive layer with the insulating film L0 interposed therebetween.

As is understood from FIG. 53, a multilayer wiring layer in which aplurality of insulating layers L (LA to LD1) and a plurality ofconductive layers (wiring layers) are alternately stacked is formed onthe surface of the insulating film L0 on which the gate layer G of eachtransistor T has been formed. Each insulating layer L is formed of, forexample, an insulating inorganic material such as a silicon compound(typically, silicon nitride or silicon oxide). In the followingdescription, a relationship in which a plurality of elements arecollectively formed in the same process through selective removal of theconductive layer (single layer or multiple layers) is indicated as“formed from the same layer”.

The insulating layer LA is formed on the surface of the insulating filmL0 on which the gate G of each transistor T has been formed. As isunderstood from FIGS. 53 and 56, the scanning line 22, the control line28 of the emission control transistor Tel, the plurality of relayelectrodes QB (QB20, QB21, QB22, QB23, and QB24) are formed from thesame layer on the surface of the insulating layer LA.

As is understood from FIGS. 53 and 56, the relay electrode QB20 iselectrically connected to the active area 10A forming the drain area orthe source area of the selection transistor Tsl via a conduction holeHA20 penetrating the insulating layer LA and the insulating film L0. Therelay electrode QB21 is electrically connected to the active area 10Aforming the drain area or the source area of the selection transistorTsl via a conduction hole HA21 penetrating the insulating film L0 andthe insulating layer LA, and is electrically connected to the gate layerGdr of the driving transistor Tdr via a conduction hole HB21 penetratingthe insulating layer LA. That is, the relay electrode QB21 is a wiringlayer for the drain area or the source area of the selection transistorTsl and the gate layer Gdr of the driving transistor Tdr.

The relay electrode QB22 is electrically connected to the active area10A forming the drain area or the source area of the driving transistorTdr via a plurality of conduction holes HA22, HA23, HA24, HA25, and HA26penetrating the insulating film L0 and the insulating layer LA. Therelay electrode QB22 is a relay electrode constituting the power supplyunit. The relay electrode QB23 is electrically connected to the activearea 10A forming the drain area or the source area of the drivingtransistor Tdr via a plurality of conduction holes HA27, HA28, HA29,HA30, and HA31 penetrating the insulating film L0 and the insulatinglayer LA, and is electrically connected to the active area 10A formingthe drain area or the source area of the emission control transistorTel. That is, the relay electrode QB23 is a wiring layer for the drainarea or the source area of the driving transistor Tdr and the drain areaor the source area of the emission control transistor Tel. The relayelectrode QB24 is electrically connected to the active area 10A formingthe drain area or the source area of the emission control transistor Telvia the conduction hole HA33 penetrating the insulating film L0 and theinsulating layer LA. The relay electrode QB24 is a relay electrodeconstituting the pixel electrode conduction portion.

As is understood from FIG. 56, the scanning line 22 is electricallyconnected to the gate layer Gsl of the selection transistor Tsl via aconduction hole HB20 penetrating the insulating layer LA. The scanningline 22 extends in a straight line shape in the X direction over theplurality of the display pixels Pe, and is electrically insulated fromthe signal line 26 to be described below by the insulating layer LB.

As is understood from FIG. 56, the control line 28 of the emissioncontrol transistor Tel is electrically connected to the gate layer Gelof the emission control transistor Tel via the conduction hole HB22formed in the insulating layer LA. The control line 28 extends in astraight line shape in the X direction over a plurality of the displaypixels Pe, and is electrically insulated from the signal line 26 to bedescribed below by the insulating layer LA.

The scanning line 22 overlaps the emission control transistor Tel in aplan view, and is electrically insulated from the gate layer Gel of theemission control transistor Tel by the insulating layer LB. The controlline 28 overlaps the selection transistor Tsl in a plan view, and iselectrically insulated from the gate layer Gsl of the selectiontransistor Tsl by the insulating layer LB.

The insulating layer LB is formed on the surface of the insulating layerLA on which the scanning line 22, the control line 27 of the selectiontransistor Tsl, the control line 28 of the emission control transistorTel, and the plurality of relay electrodes QB (QB20, QB21, QB22, QB23,and QB24) have been formed. As is understood from FIGS. 53 and 57, acapacitive electrode layer CA10, and relay electrodes QC20, QC21, andQC22 are formed on the surface of the insulating layer LB. The relayelectrode QC20 is an electrode for constituting a signal line conductionportion, and is electrically connected to the drain area or the sourcearea of the selection transistor Tsl via the conduction hole HC20penetrating the insulating layer LB. The relay electrode QC21 is anelectrode for constituting a power supply unit, and is electricallyconnected to the relay electrode QB22 via a plurality of conductionholes HC23, HC24, HC25, HC26, and HC27 penetrating the insulating layerLB. The relay electrode QC22 is an electrode constituting the pixelelectrode conduction portion, and is electrically connected to the drainarea or the source area of the emission control transistor Tel via theconduction hole HC28 penetrating the insulating layer LB.

The capacitive electrode layer CA10 is a rectangular capacitiveelectrode arranged to cover a portion of each transistor, a portion ofthe scanning line 22, and a portion of the control line 28, as isunderstood from FIG. 57. The capacitive electrode layer CA10 iselectrically connected to the relay electrode QB21 via the conductionholes HC21 and HC22 penetrating the insulating layer LB, as isunderstood from FIGS. 53 and 57. Therefore, the capacitive electrodelayer CA10 is electrically connected to the gate layer Gdr of thedriving transistor Tdr via the conduction holes HC21 and HC22, the relayelectrode QB21, and the conduction hole HB21.

The insulating layer LC is formed on the surface of the insulating layerLB on which the capacitive electrode layer CA10 and the plurality ofrelay electrodes QC (QC20, QC21 and QC22) have been formed. As isunderstood from FIGS. 53 and 58, a first power supply line layer 41-0 isformed on the surface of the insulating layer LC. An insulating layerLD0 is formed on the surface of the insulating layer LC on which thefirst power supply line layer 41-0 has been formed, and a first powersupply line layer 41-1, a relay electrode QD20, and a relay electrodeQD21 are formed on the surface of the insulating layer LD0. The relayelectrode QD20 is an electrode constituting a signal line conductingunit, and is electrically connected to the relay electrode QC20 via aconduction hole HD20 penetrating the insulating layer LD0 and theinsulating layer LC. The relay electrode QD21 is an electrodeconstituting a pixel electrode conduction portion, and is electricallyconnected to the relay electrode QC20 via the conduction hole 11D26penetrating the insulating layer LD0 and the insulating layer LC.

The first power supply line layer 41-1 is arranged to surround the pixelelectrode conduction portion (a conduction portion between the emissioncontrol transistor Tel and the relay electrode QD21) and the signal lineconduction portion (a conduction portion between the selectiontransistor Tsl and the relay electrode QD20), as is understood from FIG.58. Also, the first power supply line layer 41-1 is arranged between thepixel electrode conduction portion (the conduction portion between theemission control transistor Tel and the relay electrode QD21) and thesignal line conduction portion (the conduction portion between theselection transistor Tsl and the relay electrode QD20). Further, thefirst power supply line layer 41-1 is a pattern formed to be continuouswithout a gap from the display pixels Pe adjacent in X and Y directions.The first power supply line layer 41 is electrically connected to amounting terminal 36 to which a power supply potential Vel on a highlevel side is supplied, via a wiring (not illustrated) within themultilayer wiring layer. Further, the first power supply line layer 41-1is formed in the display area 16 of the first area 12 illustrated inFIG. 1. Further, although not shown, another power supply line layer isalso formed in a peripheral area 18 of the first area 12. This powersupply line layer is electrically connected to a mounting terminal 36 towhich a power supply potential Vct on a low level side is supplied, viaa wiring (not illustrated) within the multilayer wiring layer. The firstpower supply line layer 41-1 and the power supply line layer to whichthe power supply potential Vet on a low level side is supplied areformed of a conductive material containing, for example, silver oraluminum and to a thickness of, for example, about 100 nm.

The first power supply line layer 41-0 is a rectangular electrode layerconnected to the first power supply line layer 41-1 and arranged at apredetermined interval from the pixel electrode conduction portion andthe signal line conduction portion in the Y direction and at apredetermined interval from the power supply unit in the X direction, asis understood from FIG. 58. The first power supply line layer 41-0 andthe first power supply line layer 41-1 are insulated from the capacitiveelectrode layer CA10 by the insulating layer LB and the insulating layerLC. The first power supply line layer 41-0 has a structure suspendedfrom the first power supply line layer 41-1, as is understood from FIG.53. The first power supply line layer 41-0 is electrically connected tothe source area or the drain area of the driving transistor Tdr via thefirst power supply line layer 41-1. Therefore, the first power supplyline layer 41-0 corresponds to the second capacitive electrode C2 of thecapacitive element C illustrated in FIGS. 2 and 3, and the capacitiveelectrode layer CA10 corresponds to the first capacitive electrode C1 ofthe capacitive element C illustrated in FIGS. 2 and 3. Therefore, sincethe first power supply line layer 41-0 constituting the secondcapacitive electrode C2 of the capacitive element C has the structuresuspended from the first power supply line layer 41-1, it is possible toobtain a thin dielectric film of the capacitive element C and to obtaingreater capacitance of the capacitive element C. It is possible toincrease a degree of freedom of the arrangement, as compared to a casein which the first power supply line layer 41-1 is used alone. Asdescribed above, in this embodiment, the capacitive element C includesthe first power supply line layer 41-0, the insulating layer LC, and thecapacitive electrode layer CA10.

The first power supply line layer 41-1 is electrically connected to therelay electrode QC21 via the plurality of conduction holes HD21, HD22,HD23, HD24, and HD25 penetrating the insulating layer LD0 and theinsulating layer LC, as is understood from FIGS. 53, 57, and 58.Therefore, the first power supply line layer 41-1 is electricallyconnected to the source area or the drain area of the driving transistorTdr via the plurality of conduction holes HD21, HD22, HD23, HD24, andHD25, the relay electrode QC21, the plurality of conduction holes HC23,HC24, HC25, HC26, and HC27, the relay electrode QB22, and the pluralityof conduction holes HA22, HA23, HA24, HA25, and HA26, as is understoodfrom FIGS. 53 to 58.

The insulating layer LD1 is formed on the surface of the insulatinglayer LD0 on which the first power supply line layer 41-1 and theplurality of relay electrodes QD (QD20 and QD21) have been formed. As isunderstood from FIGS. 53 and 59, a signal line 26 and a relay electrodeQE20 are formed on the surface of the insulating layer LD1. The signalline 26 extends in a straight line shape in the Y direction over aplurality of pixels P, and electrically isolated from the first powersupply line layer 41-1 by the insulating layer LD1. The signal line 26is electrically connected to the active area 10A forming the source areaor the drain area of the selection transistor Tsl via the conductionhole HE20, the relay electrode QD20, the conduction hole HD20, the relayelectrode QC20, the conduction hole HC20, the relay electrode QB20, andthe conduction hole 11A20, as is understood from FIGS. 53 to 59.Further, the signal line 26 is formed to pass through positions in thelayer over the scanning line 22, the control line 27, and the controlline 28, and extends in a direction (Y direction) of a channel length ofthe selection transistor Tsl and the driving transistor Tdr. Further, ina plan view, the signal line 26 is arranged to overlap the selectiontransistor Tsl and the driving transistor Tdr. Therefore, it is possibleto achieve high density of the pixels.

The relay electrode QE20 is one of the relay electrodes constituting thepixel electrode conduction portion, and is electrically connected to theactive area 10A forming the drain area or the source area of theemission control transistor Tel via a conduction hole HE21 penetratingthe insulating layer LD1, the relay electrode QD21, the conduction holeHD26, the relay electrode QC22, the conduction hole HC28, the relayelectrode QB24, and the conduction hole HA33, as is understood fromFIGS. 53 to 59.

The insulating layer LE is formed on the surface of the insulating layerLD1 on which the signal line 26 and the relay electrode QE20 have beenformed. A planarization process is executed for the surface of theinsulating layer LE. In the planarization process, a known surfaceprocessing technology such as chemical mechanical polishing (CMP) isoptionally adopted. A reflective layer 55 is formed on a surface of theinsulating layer LE highly planarized in the planarization process, asillustrated in FIGS. 53 and 60. The reflective layer 55 is electricallyconnected to the relay electrode QE20 via the conduction hole HF20penetrating the insulating layer LE, as is understood from FIGS. 59 and60. Therefore, the reflective layer 55 is electrically connected to thepixel electrode conduction portion (a conduction portion between theemission control transistor Tel and the relay electrode QE20). Thereflective layer 55 is separately formed in each display pixel Pe,similarly to the first electrode E1. In this embodiment, the reflectivelayer 55 is formed of an optically reflecting conductive materialcontaining, for example, silver or aluminum and to a film thickness of,for example, about 100 nm. The reflective layer 55 may be formed of anoptically reflecting conductive material is arranged to cover eachtransistor T, each wiring, and each relay electrode, as illustrated inFIG. 28. Therefore, there is an advantage in that the intrusion ofexternal light can be prevented by the reflective layer 55, and theleakage of a current of each transistor T caused by light irradiationcan be prevented.

As illustrated in FIG. 53, an optical path adjustment layer 60 is formedon the surface of the insulating layer LE on which the reflective layer55 has been formed. The optical path adjustment layer 60 is a lighttransmissive film body that defines a resonance wavelength (that is,display color) of a resonant structure of each display pixel Pe. Theresonance wavelengths of the resonant structures are substantially thesame in the pixels having the same display colors, and the resonancewavelengths of the resonant structures are set to be different from eachother in the pixels having different display colors.

As illustrated in FIGS. 53 and 61, the first electrode E1 of eachdisplay pixel Pe in the display area 16 is formed on a surface of theoptical path adjustment layer 60. The first electrode E1 is formed of alight transmissive conductive material such as ITO (Indium Tin Oxide).The first electrode E1 is a substantially rectangular electrode (pixelelectrode) functioning as a positive electrode of the light emittingelement 45, as has been described above with reference to FIGS. 2 and 3.The first electrode E1 is electrically connected to the reflective layer55 via a conduction hole HG20 formed in the optical path adjustmentlayer 60 in each display pixel Pe, as is understood from FIGS. 53 and61.

A pixel definition layer 65 is formed over the entire area of thesubstrate 10 on a surface of the optical path adjustment layer 60 onwhich the first electrode E1 has been formed, as illustrated in FIGS. 53and 62. The pixel definition layer 65 is formed of, for example, aninsulating inorganic material such as a silicon compound (typically,silicon nitride or silicon oxide). As is understood from FIG. 62, anopening 65A corresponding to each of the first electrodes E1 in thedisplay area 16 is formed in the pixel definition layer 65. An area nearan inner periphery of the opening 65A of the pixel definition layer 65overlaps the periphery of the first electrode E1. That is, the innerperiphery of the opening 65A is located on an inner side of theperiphery of the first electrode E1 in a plan view. The respectiveopenings 65A are the same in a plan shape (rectangular shape) or a size,and are arranged in a matrix shape with the same pitch in each of X andY directions. As is understood from the above description, the pixeldefinition layer 65 is formed in a grid shape in a plan view. Further,the plan shapes or the sizes of the openings 65A may be the same as oneanother when display colors are the same as one another and may bedifferent from one another when the display colors are different fromone another. Further, the pitches of the openings 65A are the same asone another when the display colors are the same as one another, and maybe different from one another when the display colors are different fromone another.

Further, although detailed description is omitted, the light emittingfunction layer 46, the second electrode E2, and the sealing body 47 arestacked on the layer over the first electrode E1, and a sealingsubstrate (not illustrated) is bonded to a surface of the substrate 10in which the respective elements have been formed, for example, using anadhesive. The sealing substrate is a light transmissive plate-shapedmember (for example, a glass substrate) for protecting each element onthe substrate 10. Further, a color filter can be formed in each displaypixel Pe on the surface of the sealing substrate or the surface of thesealing body 47.

As described above, a layered structure in this embodiment is the sameas the layered structure in the fourth embodiment. That is, since thecapacitive electrode layer CA10 is formed on a layer over the layer onwhich each transistor has been formed and the layer on which thescanning line 22 or the control line 28 has been formed, the capacitiveelectrode layer CA10 can be arranged without being relatively bound byarrangement of the transistor or the wiring. Further, since stackingwith the layer on which the scanning line 22 or the control line 28 hasbeen formed is possible, it is easy to achieve a high density of pixels.

In this embodiment, the reflective layer 55 is connected to the firstelectrode E1 that is a pixel electrode, as in the third embodiment.There is an advantage in that the potential of the first electrode E1that is a pixel electrode and the reflective layer 55 is lesssusceptible to the potential of the signal line 26 since a potential ofthe first electrode E1 that is a pixel electrode is set according to thepotential of the driving transistor Tdr or the light emitting element45.

The signal line conduction portion which connects the signal line 26 tothe drain area or the source area of the selection transistor Tsl isprovided through the layer on which the first power supply line layer41-1 has been formed and the layer on which the scanning line 22 hasbeen formed, as in the third embodiment. This signal line conductionportion is a drain wiring or a source wiring of the selection transistorTsl. Through such a configuration, it is possible to connect theselection transistor Tsl to the signal line 26 with less resistance, ascompared to a case in which conduction is achieved by extending thesignal line 26 to the lower layer. Further, the signal line conductionportion and the signal line 26 are arranged while avoiding the pixelelectrode conduction portion.

In this embodiment, the signal line 26 is arranged to overlap theselection transistor Tsl and the driving transistor Tdr in a plan view.As a result, it is possible to achieve high density of the pixels.

Further, with the same configuration as that in each embodimentdescribed above, it is possible to achieve the same effects as in eachembodiment described above. Further, in this embodiment, the samemodification example as that described in the first embodiment is alsoapplicable.

Seventh Embodiment

A seventh embodiment of the invention will be described. Further, ineach form to be illustrated below, elements having the same operation orfunction as in each embodiment are denoted with the signs referred to inthe description of each embodiment, and each detailed description willbe appropriately omitted.

A specific structure of the organic electroluminescent device 100 of theseventh embodiment is substantially the same structure as the specificstructure of the organic electroluminescent device 100 in the sixthembodiment. Hereinafter, only a difference will be described forsimplification.

FIG. 63 is a sectional view of the organic electroluminescent device100, and FIGS. 64 to 72 are plan views illustrating a state of thesurface of the substrate 10 in respective steps of forming respectiveelements of the organic electroluminescent device 100 for one displaypixel Pe. A sectional view corresponding to a section including a lineLXIII-LXIII in FIGS. 64 to 72 corresponds to FIG. 63. Further, whileFIGS. 64 to 72 are plan views, each element that is the same as that inFIG. 63 is conveniently hatched in the same aspect as that in FIG. 63from the viewpoint of facilitation of visual recognition of eachelement.

In the seventh embodiment, since channel lengths of the emission controltransistor Tel and the selection transistor Tsl are in a horizontaldirection (extending direction of the scanning line 22) as is understoodfrom FIGS. 64 and 65, a channel and a wiring are arranged to be shifted,as illustrated in FIG. 66.

A layered structure in the seventh embodiment is the same as that in thesixth embodiment, and a capacitive electrode layer CA11 is formed alayer over a layer on which each transistor has been formed and a layeron which a scanning line 22 and a control line 28 have been formed, asillustrated in FIGS. 63, 66 and 67. The capacitive electrode layer CA11is electrically connected to a gate layer Gdr of a driving transistorTdr via a conduction hole HC41 penetrating an insulating layer LB, arelay electrode QB42, and a conduction hole HB41 penetrating aninsulating layer LA.

As is understood from FIGS. 63, 67 and 68, a first power supply linelayer 41-0 and a first power supply line layer 41-1 are formed on alayer over the layer on which the capacitive electrode layer CA11 hasbeen formed, and the first power supply line layer 41-1 is electricallyconnected to the drain area or the source area of the driving transistorTdr via a conduction hole HD41 penetrating an insulating layer LC, arelay electrode QC41, a conduction hole HC42 penetrating the insulatinglayer LB, a relay electrode QB43, and a conduction hole HA42 penetratingan insulating layer LA and an insulating film L0.

As is understood from FIGS. 63, 67 and 68, a signal line 26 is formed ona layer over the layer on which the first power supply line layer 41-1has been formed. The signal line 26 is electrically connected to a drainarea or a source area of a selection transistor Tsl via a conductionhole HE40 penetrating an insulating layer LD1, a relay electrode QD40,the conduction hole HD40 penetrating the insulating layer LD0 and theinsulating layer LC, a relay electrode QC40, a conduction hole HC40penetrating the insulating layer LB, a relay electrode QB40, and aconduction hole HA40 penetrating the insulating film L0 and theinsulating layer LA.

As described above, a layered structure in this embodiment is the sameas the layered structure in the sixth embodiment. That is, since thecapacitive electrode layer CA11 is formed on a layer over the layer onwhich each transistor has been formed and the layer on which thescanning line 22 or the control line 28 has been formed, the capacitiveelectrode layer CA11 can be arranged without being relatively bound byarrangement of the transistor or the wiring. Further, since stackingwith the layer on which the scanning line 22 or the control line 28 hasbeen formed is possible, it is easy to achieve a high density of pixels.

In this embodiment, a reflective layer 55 is connected to the firstelectrode E1 that is a pixel electrode. There is an advantage in thatthe potential of the first electrode E1 that is a pixel electrode andthe reflective layer 55 is less susceptible to the potential of thesignal line 26 since a potential of the first electrode E1 that is apixel electrode is set according to the potential of the drivingtransistor Tdr or the light emitting element 45.

The signal line conduction portion which connects the signal line 26 tothe drain area or the source area of the selection transistor Tsl isprovided through the layer on which the first power supply line layer41-1 has been formed and the layer on which the scanning line 22 hasbeen formed, as in the sixth embodiment. This signal line conductionportion is a drain wiring or a source wiring of the selection transistorTsl. Through such a configuration, it is possible to connect theselection transistor Tsl to the signal line 26 with less resistance, ascompared to a case in which conduction is achieved by extending thesignal line 26 to the lower layer. Further, the signal line conductionportion and the signal line 26 are arranged while avoiding the pixelelectrode conduction portion.

In this embodiment, the signal line 26 is arranged to overlap theselection transistor Tsl in a plan view. As a result, it is possible toachieve high density of the pixels.

Further, with the same configuration as that in each embodimentdescribed above, it is possible to achieve the same effects as in eachembodiment described above. Further, in this embodiment, the samemodification example as that described in the first embodiment is alsoapplicable.

Eighth Embodiment

A seventh embodiment of the invention will be described. Further, ineach form to be illustrated below, elements having the same operation orfunction as in each embodiment are denoted with the signs referred to inthe description of each embodiment, and each detailed description willbe appropriately omitted.

While the organic electroluminescent device 100 of the eighth embodimentdoes not include the compensation transistor Tcmp, similarly to thesixth embodiment and the seventh embodiment, a specific structure suchas a layered structure is substantially the same structure as theorganic electroluminescent device 100 in the first embodiment.Hereinafter, only a difference will be described for simplification.

FIG. 73 is a sectional view of the organic electroluminescent device100, and FIGS. 74 to 83 are plan views illustrating a state of thesurface of the substrate 10 in respective steps of forming respectiveelements of the organic electroluminescent device 100 for one displaypixel Pe. A sectional view corresponding to a section including a lineLXXIII-LXXIII in FIGS. 74 to 83 corresponds to FIG. 73. Further, whileFIGS. 74 to 83 are plan views, each element that is the same as that inFIG. 73 is conveniently hatched in the same aspect as that in FIG. 73from the viewpoint of facilitation of visual recognition of eachelement.

In the seventh embodiment, as is understood from FIGS. 74 and 75, achannel length direction of the emission control transistor Tel and theselection transistor Tsl is a vertical direction (extending direction ofthe signal line 26), and the emission control transistor Tel and theselection transistor Tsl are arranged in a straight line shape. Further,in the present embodiment, a connection portion between gate layers Gdr,Gsl, and Gel of the respective transistors, the control line, and thelike is provided in a position shifted in a horizontal direction(extending direction of the scanning line 22) rather than a position onthe channel.

In the present embodiment, as understood from FIGS. 76 and 77, the layeron which the scanning line 22 and the control line 28 are formed isarranged on a layer over the layer on which each transistor has beenformed, and the signal line 26 is formed on a layer over the layer onwhich the scanning line 22 and the control line 28 are formed. As isunderstood from FIGS. 73, 75 to 77, the signal line 26 is electricallyconnected to the drain area or the source area of the selectiontransistor Tsl via the conduction hole HC61 penetrating the insulatinglayer LB, the relay electrode QB61, and the conduction hole HA61penetrating the insulating layer LA and the insulating film L0.

As is understood from FIGS. 73, and 75 to 78, the first power supplyline layer 41 is formed on a layer over the layer on which the signalline 26 has been formed. The first power supply line layer 41 is formedto surround the relay electrode QD61 constituting the pixel electrodeconduction portion and the relay electrode QD60 constituting the gateconduction portion of the driving transistor Tdr, as is understood fromFIG. 78. Further, the first power supply line layer 41 is a patternformed to be continuous without a gap from the display pixels Peadjacent in X and Y directions. The first power supply line layer 41 iselectrically connected to the mounting terminal 36 to which a powersupply potential Vel on a high level side is supplied, via a wiring (notillustrated) within the multilayer wiring layer. Further, the firstpower supply line layer 41-1 is formed in the display area 16 of thefirst area 12 illustrated in FIG. 1. Further, although not shown,another power supply line layer is also formed in the peripheral area 18of the first area 12. This power supply line layer is electricallyconnected to the mounting terminal 36 to which a power supply potentialVet on a low level side is supplied, via a wiring (not illustrated)within the multilayer wiring layer. The first power supply line layer41-1 and the power supply line layer to which the power supply potentialVet on a low level side is supplied are formed of a conductive materialcontaining, for example, silver or aluminum and to a thickness of, forexample, about 100 nm. The first power supply line layer 41 iselectrically connected to the drain area or the source area of thedriving transistor Tdr via the conduction hole HD61 penetrating theinsulating layer LC, the relay electrode QC61, the conduction hole HC63penetrating the insulating layer LB, the relay electrode QB62, and theconduction hole HA62 penetrating the insulating film L0 and theinsulating layer LA, as is understood from FIGS. 73 to 78.

As is understood from FIGS. 73, 78 and 79, the capacitive electrodelayer CA0, and the capacitive electrode layer CA0 connected to thecapacitive electrode layer CA0 are formed on a layer over the layer onwhich the first power supply line layer 41 has been formed. Thecapacitive electrode layer CA0 is electrically connected to the drainarea or the source area of the selection transistor Tsl via a conductionhole HE60 penetrating the insulating layer LD1 and the insulating layerLD0, the relay electrode QD60, a conduction hole HD60 penetrating theinsulating layer LC, a relay electrode QC60, a conduction hole HC60penetrating the insulating layer LB, a relay electrode QB60, and aconduction hole HA60 penetrating the insulating layer LA and theinsulating film L0, as is understood from FIGS. 73 to 79. Further, thecapacitive electrode layer CA0 is electrically connected to the gatelayer Gdr of the driving transistor Tdr via the relay electrode QC60, aconduction hole HC64 penetrating the insulating layer LB, a relayelectrode QB63, and a conduction hole HB61 penetrating the insulatinglayer LA. The capacitive electrode layer CA0 has a structure suspendedfrom the capacitive electrode layer CA1, as is understood from FIG. 73.

As is understood from FIGS. 73, 79 and 80, the upper power supply linelayer 43-0 and the upper power supply line layer 43-1 are formed on alayer over the layer on which the capacitive electrode layer CA0 and thecapacitive electrode layer CA1 have been formed. The upper power supplyline layer 43-1 is arranged to surround the pixel electrode conductionportion (a conduction portion between the emission control transistorTel and the relay electrode QF60), as is understood from FIG. 80.Further, the upper power supply line layer 43-1 is a pattern formed tobe continuous without a gap from the display pixels Pe adjacent in X andY directions. In this embodiment, the upper power supply line layer 43-1also functions as a reflective layer, and is formed of a lightreflective and conductive material containing, for example, silver oraluminum and to a thickness of, for example, about 100 nm. The upperpower supply line layer 43-1 is formed of an optically reflectingconductive material, and is arranged to cover each transistor T, eachwiring, and each relay electrode, as illustrated in FIG. 80. Therefore,there is an advantage in that the intrusion of external light can beprevented by the upper power supply line layer 43-1, and the leakage ofa current of each transistor T caused by light irradiation can beprevented.

The upper power supply line layer 43-0 is connected to the upper powersupply line layer 43-1, and arranged to surround the pixel electrodeconduction portion (a conduction portion between the emission controltransistor Tel and the relay electrode QF60), as is understood from FIG.80. Further, the upper power supply line layer 43-0 is a rectangularelectrode layer arranged at a predetermined interval from the upperpower supply line layer 43-0 of the adjacent display pixel Pe in the Yand X directions. The upper power supply line layer 43-0 and the upperpower supply line layer 43-1 are insulated from the capacitive electrodelayer CA0 and the capacitive electrode layer CA1 by the insulating layerLD0 and the insulating layer LD1. The upper power supply line layer 43-0has a structure suspended from the upper power supply line layer 43-1,as is understood from FIG. 4. The upper power supply line layer 43-0 iselectrically connected to the first power supply line layer 41 via theupper power supply line layer 43-1, and electrically connected to thesource area or the drain area of the driving transistor Tdr.

In this embodiment, the first power supply line layer 41, the insulatinglayer LD0, and the capacitive electrode layer CA0 constitute the firstcapacitive element C-1, and the capacitive electrode layer CA0, theinsulating layer LD1, the insulating layer LE0, and the upper powersupply line layer 43-0 constitute a second capacitive element C-2.

As described above, in this embodiment, the capacitive electrode layerCA1 connected to the gate layer Gdr of the driving transistor Tdr, andthe capacitive electrode layer CA0 connected to the capacitive electrodelayer CA1 are provided on a layer over the gate layer Gdr of the drivingtransistor Tdr, and the first power supply line layer 41 is arrangedbetween the capacitive electrode layer CA1 and the capacitive electrodelayer CA0, and the signal line 26 connected to the drain area or thesource area of the selection transistor Tsl. The first power supply linelayer 41 is formed over the substantially entire surface other than theconduction portion between the first electrode E1 that is a pixelelectrode and the source area or the drain area of the emission controltransistor Tel, that is, the pixel electrode conduction portion and thegate conduction portion of the driving transistor Tdr. Therefore,coupling between the signal line 26 that is a noise source, and thecapacitive electrode layer CA1 and the capacitive electrode layer CA0connected to the gate layer Gdr of the driving transistor Tdr issuppressed.

Further, while the scanning line 22 connected to the gate layer Gsl ofthe selection transistor Tsl is arranged on a layer under the signalline 26, the first power supply line layer 41 is arranged between thescanning line 22, and the capacitive electrode layer CA1 and thecapacitive electrode layer CA1. The first power supply line layer 41 isformed over the substantially entire surface to cover not only thesignal line 26, but also the scanning line 22. Therefore, couplingbetween the scanning line 22 that becomes a noise source, and thecapacitive electrode layer CA1 and the capacitive electrode layer CA0connected to the gate layer Gdr of the driving transistor Tdr issuppressed.

In this embodiment, the upper power supply line layer 43-1 and the upperpower supply line layer 43-0 are arranged between the capacitiveelectrode layer CA1 and the capacitive electrode layer CA0, and thefirst electrode E1 that is a pixel electrode. The upper power supplyline layer 43-1 and the upper power supply line layer 43-0 are formedover the substantially entire surface other than the pixel conductionportion described above. Therefore, coupling between the capacitiveelectrode layer CA1 and the capacitive electrode layer CA0 connected tothe gate layer Gdr of the driving transistor Tdr, and the firstelectrode E1 that is a pixel electrode is suppressed.

The conduction portion between the first electrode E1 that is a pixelelectrode and the source area or the drain area of the emission controltransistor Tel includes a plurality of conduction holes and a pluralityof relay electrodes. These function as a source wiring or a drain wiringof the emission control transistor Tel. That is, the conduction portionbetween the first electrode E1 and the source area or the drain area ofthe emission control transistor Tel includes the source wiring or thedrain wiring of the emission control transistor Tel provided through thefirst power supply line layer 41, the capacitive electrode layer CA1 andthe capacitive electrode layer CA0, and the upper power supply linelayer 43-1 and the upper power supply line layer 43-0. Therefore, thesource area or the drain area of the emission control transistor Tel canbe connected to the first electrode E1 that is the pixel electrode withless resistance, as compared to a case in which the pixel electrodeextends to the layer of the source area or the drain area of theemission control transistor Tel to achieve the conduction.

The conduction portion that connects the driving transistor Tdr to thefirst power supply line layer 41 includes a plurality of conductionholes and a plurality of relay electrodes. This conduction portionfunctions as a source wiring or a drain wiring of the driving transistorTdr. Using this configuration, the driving transistor Tdr can beconnected to the first power supply line layer 41 with less resistance,as compared to a case in which the first power supply line layer 41extends to a lower layer to achieve the conduction.

The conduction portion that connects the gate layer Gdr of the drivingtransistor Tdr to the capacitive electrode layer CA1 includes aplurality of relay electrodes and a plurality of conduction holes. Thisconduction portion is a source wiring or a drain wiring of the selectiontransistor Tsl, and is provided through the layer on which the gatelayer Gdr has been formed. The driving transistor Tdr can be connectedto the capacitive electrode layer CA1 with less resistance, as comparedto a case in which the capacitive electrode layer CA1 extends to a lowerlayer to achieve the conduction.

The capacitive element C has a configuration in which two types ofcapacitive elements including the first capacitive element C-1 havingthe upper power supply line layer 43-0 as the second capacitiveelectrode C2 and the capacitive electrode layer 43-0 as the firstcapacitive electrode C1, and the second capacitive element C-2 havingthe first power supply line layer 41 as the second capacitive electrodeC2 and the capacitive electrode layer 43-0 as the first capacitiveelectrode C1 are stacked in a stacking direction (Z direction), asdescribed above. In the first capacitive element C-1, the upper powersupply line layer 43-0 that is the second capacitive electrode C2 isconfigured to be electrically connected to the upper power supply linelayer 43-1 and arranged on a layer under the upper power supply linelayer 43-1. In the above example, for example, this arrangement isrealized by a structure suspended from the upper power supply line layer43-1. Therefore, it is possible to obtain a thinner dielectric film ofthe first capacitive element C-1 and to obtain greater capacitance ofthe first capacitive element C-1, as compared to a case in which theupper power supply line layer 43-1 formed on the same layer as the relayelectrode is used as the second capacitive electrode C2. Alternatively,it is possible to increase a degree of freedom of the arrangement of thefirst capacitive element C-1.

In the second capacitive element C-2, the capacitive electrode layer CA0that is a second capacitive electrode C2 is configured to beelectrically connected to the capacitive electrode layer CA1 that is agate wiring connected to the gate layer Gdr of the driving transistorTdr, and to be arranged on a layer under the capacitive electrode layerCA1. In the above-described example, for example, this arrangement isrealized by a structure suspended from the capacitive electrode layerCA1. Therefore, it is possible to obtain a thinner dielectric layer ofthe second capacitive element C-2 and to obtain greater capacitance ofthe second capacitive element C-2, as compared to a case in which thecapacitive electrode layer CA1 formed on the same layer as the relayelectrode is used as the second capacitive electrode C2. Alternatively,it is possible to increase a degree of freedom of the arrangement of thesecond capacitive element C-2.

In the second capacitive element C-2, the capacitive electrode layer CA0corresponding to the first capacitive electrode C1 connected to the gatelayer Gdr of the driving transistor Tdr is arranged between the upperpower supply line layer 43-0 corresponding to the second capacitiveelectrode C2 and the layer on which the scanning line 22 has beenformed. That is, the first capacitive electrode C1 of the capacitiveelement C is arranged on the layer on which the scanning line 22 hasbeen formed. Therefore, since the capacitive electrode layer can beformed separately from the layer on which the scanning line 22 has beenformed or the upper power supply line layer 43-0, it is possible toincrease a degree of freedom of design.

In the first capacitive element C-1, the capacitive electrode layer CA0corresponding to the first capacitive electrode C1 is arranged betweenthe first power supply line layer 41 and the first electrode E1 that isa pixel electrode. That is, the first capacitive electrode C1 of thecapacitive element C connected to the gate potential side is arranged onthe pixel electrode side. By adopting this arrangement, it is possibleto reduce noise caused by the scanning line 22 with respect to the firstelectrode E1 that is a pixel electrode. Further, since the capacitiveelectrode can be formed separately from the first electrode E1 that is apixel electrode or the first power supply line layer 41, it is possibleto increase a degree of freedom of design. Further, since a potential ofthe first electrode E1 (the drain area or the source area of theemission control transistor Tel) that is a pixel electrode is setaccording to a potential of the driving transistor Tdr or the lightemitting element 45, a potential of the first capacitive electrode C1that is a capacitive electrode is less susceptible to a variation causedby the gradation voltage, as compared to a case of an arrangement on thescanning line 22 side.

The first capacitive element C-1 and the second capacitive element C-2are provided in positions overlapping the selection transistor Tsl, theemission control transistor Tel, and the driving transistor Tdr in aplan view. Thus, it is possible to achieve a high density of pixelswhile securing the capacitance of the capacitive element. Thus,according to this embodiment, it is possible to effectively utilize thelayer over the gate layer Gdr of the driving transistor Tdr and providea pixel structure for high-density pixels.

Further, with the same configuration as that in each embodimentdescribed above, it is possible to achieve the same effects as in eachembodiment described above. Further, in this embodiment, the samemodification example as that described in the first embodiment is alsoapplicable.

Ninth Embodiment

A ninth embodiment of the invention will be described. Further, in eachform to be illustrated below, elements having the same operation orfunction as in the first embodiment are denoted with signs referred toin the description of the first embodiment, and each detaileddescription will be appropriately omitted.

A configuration of a circuit of each display pixel Pe in this embodimentis the same as the first embodiment, and includes a driving transistorTdr, a selection transistor Tsl, an emission control transistor Tel, anda compensation transistor Temp. Further, in this embodiment, althougheach transistor T (Tdr, Tel, Tsl, or Temp) of the display pixel Pe is aP-channel type, an N-channel type transistor can also be used. Thecircuit of the display pixel Pe in this embodiment can be driven usingany one of a so-called coupling driving scheme and a so-called currentprogramming scheme.

Hereinafter, a specific structure of the organic electroluminescentdevice 100 of the ninth embodiment will be described in detail. Further,in each drawing referred to in the following description, a dimension ora scale of each element is different from that in an actual organicelectroluminescent device 100 for convenience of description. FIG. 84 isa sectional view of the organic electroluminescent device 100, and FIGS.85 to 92 are plan views illustrating a state of the surface of thesubstrate 10 in respective steps of forming respective elements of theorganic electroluminescent device 100 for one display pixel Pe. FIGS. 93to 95 are plan views illustrating a state of the surface of thesubstrate 10 for four display pixels Pe. A sectional view correspondingto a section including a line LXXXIV-LXXXIV in FIGS. 85 to 92corresponds to FIG. 84. Further, while FIGS. 85 to 92 are plan views,each element that is the same as that in FIG. 84 is conveniently hatchedin the same aspect as that in FIG. 84 from the viewpoint of facilitationof visual recognition of each element.

As is understood from FIGS. 84 and 85, an active area 10A (source/drainarea) of each transistor T (Tdr, Tsl, Tel, or Tcmp) of the display pixelPe is formed on a surface of a substrate 10 formed of a semiconductormaterial such as silicon. Ions are implanted into the active area 10A.An active layer of each transistor T (Tdr, Tsl, Tel, or Temp) of thedisplay pixel Pe exists between the source area and the drain area andis implanted with different types of ions from those in the active area10A, but is integrally described as the active area 10A, forconvenience. Further, in this embodiment, an active area 10A is alsoformed in an area constituting a capacitive element C, implantedimpurities, and connected to a power supply. Also, a so-called MOScapacitor in which the active area 10A is used as one electrode and acapacitive electrode formed through an insulating layer used as theother electrode is configured. Further, the active area 10A in the areaconstituting the capacitive element C also functions as a power supplypotential portion. As is understood from FIG. 21, the active area 10A ofthe compensation transistor Tcmp is connected to the active area 10A ofthe selection transistor Tsl in a portion in which the conduction holeHA1 has been provided. Therefore, a current terminal of the compensationtransistor Tcmp also functions as a current terminal of the selectiontransistor Tsl. As is understood from FIGS. 84 and 86, the surface ofthe substrate 10 in which the active area 10A has been formed is coveredwith an insulating film L0 (gate insulating film), and a gate layer G(Gdr, Gsl, Gel, or Gcmp) of each transistor T is formed on the surfaceof the insulating film L0. The gate layer G of each transistor T facesthe active layer with the insulating film L0 interposed therebetween.Further, as illustrated in FIG. 86, the gate layer Gdr of the drivingtransistor Tdr is formed to extend to the active area 10A formed in thearea constituting the capacitive element C, and constitutes the lowercapacitive electrode layer CA1.

As is understood from FIG. 84, a multilayer wiring layer in which aplurality of insulating layers L (LA to LD) and a plurality ofconductive layers (wiring layers) are alternately stacked is formed onthe surface of the insulating film L0 on which the gate layer G of eachtransistor T and the lower capacitive electrode layer CA1 have beenformed. Each insulating layer L is formed of, for example, an insulatinginorganic material such as a silicon compound (typically, siliconnitride or silicon oxide). Further, in the following description, arelationship in which a plurality of elements are collectively formed inthe same process through selective removal of the conductive layer(single layer or multiple layers) is indicated as “formed from the samelayer”.

The insulating layer LA is formed on the surface of the insulating filmL0 on which the gate G of each transistor T has been formed. As isunderstood from FIGS. 84 and 87, the upper capacitive electrode layersCA2, CA3, and CA4, the plurality of relay electrodes QB (QB2, QB3, QB4,QB5, and QB6), and the control line 28 of the emission controltransistor Tel are formed from the same layer on the surface of theinsulating layer LA. As is understood from FIGS. 84 and 85, the uppercapacitive electrode layer CA2 is electrically connected to the activearea 10A forming the source area or the drain area of the drivingtransistor Tdr via the conduction hole HA5 penetrating the insulatinglayer LA and the insulating film L0. The opening 50 is formed in theupper capacitive electrode layer CA2 to surround the area in which aportion of the gate layer Gdr of the driving transistor Tdr and thelower capacitive electrode layer CA1 have been formed in a plan view.

In the opening 50, the upper capacitive electrode layer CA3 and theupper capacitive electrode layer CA4 are formed on the same layer as theupper capacitive electrode layer CA2. An opening 52 is formed in theupper capacitive electrode layer CA3, and the upper capacitive electrodelayer CA4 is formed in the opening 52. That is, the upper capacitiveelectrode layer CA2 and the upper capacitive electrode layer CA3 areformed apart and electrically insulated from each other, and the uppercapacitive electrode layer CA3 and the upper capacitive electrode layerCA4 are formed apart and electrically insulated from each other. Theupper capacitive electrode layer CA3 also functions as a wiring layerthat connects the gate layer Gdr of the driving transistor Tdr to thedrain area or the source area of the selection transistor Tsl. That is,as is understood from FIGS. 84, 86 and 87, the upper capacitiveelectrode layer CA3 is electrically connected to the active area 10A ofthe selection transistor Tsl via the conduction hole HA2 penetrating theinsulating layer LA and the insulating film L0, and is electricallyconnected to the gate Gdr of the driving transistor Tdr via theconduction hole HB2 of the insulating layer LA.

The relay electrode QB4, the relay electrode QB3, the relay electrodeQB5, the relay electrode QB2, and the relay electrode QB6 are formed onthe same layer as the upper capacitive electrode layer CA2 in theconduction portion among the driving transistor Tdr, the compensationtransistor Tcmp, and the emission control transistor Tel, the conductionportion between the compensation transistor Tcmp and the selectiontransistor Tsl, the conduction portion of the gate layer Gcmp of thecompensation transistor Tcmp, the conduction portion of the gate layerGsl of the selection transistor Tsl, and the conduction portion betweenthe emission control transistor Tel and the first electrode E1 as thepixel electrode, respectively. Further, the control line 28 is formed onthe same layer as the upper capacitive electrode layer CA2 in theconduction portion of the gate layer Gel of the emission controltransistor Tel. As is understood from FIGS. 84, 86 and 87, the relayelectrode QB4 is electrically connected to the active area 10A formingthe drain area or the source area of the driving transistor Tdr via aconduction hole HA6 penetrating the insulating film L0 and theinsulating layer LA. Further, the relay electrode QB4 is electricallyconnected to the active area 10A forming the drain area or the sourcearea of the compensation transistor Tcmp via a conduction hole HA7penetrating the insulating film L0 and the insulating layer LA. Further,the relay electrode QB4 is electrically connected to the active area 10Aforming the drain area or the source area of the emission controltransistor Tel via a conduction hole HA8 penetrating the insulating filmL0 and the insulating layer LA. Further, the relay electrode QB2 iselectrically connected to the gate layer Gsl of the selection transistorTsl via the conduction hole HB1 penetrating the insulating layer LA. Therelay electrode QB3 is electrically connected to the active area 10Aforming the source area or the drain area of the selection transistorTsl and also forming the source area or the drain area of thecompensation transistor Tcmp via the conduction hole HA1 penetrating theinsulating layer LA and the insulating film L0. The relay electrode QB5is electrically connected to the gate layer Gcmp of the compensationtransistor Tcmp via a conduction hole HB3 penetrating the insulatinglayer LA. The relay electrode QB6 is electrically connected to theactive area 10A forming the drain area or the source area of theemission control transistor Tel via the conduction hole HA9 penetratingthe insulating film L0 and the insulating layer LA.

The control line 28 of the emission control transistor Tel iselectrically connected to the gate layer Gel of the emission controltransistor Tel via a conduction hole HB4 formed in the insulating layerLA. The control line 28 extends in a straight line shape in the Xdirection over the plurality of the display pixels Pe and iselectrically insulated from the gate layer Gcmp of the compensationtransistor Temp by the insulating layer LA, as is understood from FIG.93. As is understood from FIG. 87, each of the selection transistor Tsl,the driving transistor Tdr, and the emission control transistor Tel isformed so that its channel length is in the Y direction. Further, thearea constituting the capacitive element C is arranged in a positionshifted in the X direction (positive side in the X direction in FIG. 87)with respect to the driving transistor Tdr. Further, a conduction placebetween the gate layer Gsl of the selection transistor Tsl and the relayelectrode QB2 is arranged in a position shifted in the X direction(negative side in the X direction in FIG. 87) with respect to theselection transistor Tsl. A conduction place between the gate layer Gcmpof the compensation transistor Tcmp and the relay electrode QB5 isarranged in a position shifted in the Y direction (positive side of theY direction in FIG. 87) with respect to the compensation transistorTemp.

The insulating layer LB is formed on the surface of the insulating layerLA on which the upper capacitive electrode layer CA2, the uppercapacitive electrode layer CA3, the upper capacitive electrode layerCA4, the plurality of relay electrodes QB (QB2, QB3, QB4, QB5, and QB6),and the control line 28 have been formed. As is understood from FIGS. 84and 88, the power supply line layer 41 as a first power supplyconductor, the scanning line 22, the control line 27 of the compensationtransistor Temp, and the plurality of relay electrodes QC (QC1 and QC3)are formed from the same layer on the surface of the insulating layerLB. The power supply line layer 41 is electrically connected to themounting terminal 36 to which the power supply potential Vel on the highlevel side is supplied, via a wiring (not illustrated) within themultilayer wiring layer. Further, the power supply line layer 41 isformed in the display area 16 of the first area 12 illustrated inFIG. 1. Further, although not shown, another power supply line layer isalso formed in the peripheral area 18 of the first area 12. This powersupply line layer is electrically connected to the mounting terminal 36to which the power supply potential Vct on a low level side is supplied,via a wiring (not illustrated) within the multilayer wiring layer. Thepower supply line layer 41 and the power supply line layer to which thepower supply potential Vet on the low level side is supplied are formedof a conductive material containing, for example, silver or aluminum andto a thickness of, for example, about 100 nm.

The power supply line layer 41 is a power supply wiring to which thepower supply potential Vel on the high level side is supplied asdescribed above, and covers the opening 50 of the upper capacitiveelectrode layer CA2, and the upper capacitive electrode layer CA2 aroundthe opening 50 in each pixel, as is understood from FIGS. 88 and 94. Thepower supply line layer 41 is also formed to extend to a position forcovering the control line 28 of the emission control transistor Tel ofthe display pixel Pe adjacent in the Y direction. An opening 53 isformed in a continuous portion of the adjacent display pixel Pe, and isarranged to surround the pixel electrode conduction portion (aconduction portion between the emission control transistor Tel and therelay electrode QC3). Further, the power supply line layer 41 is apattern formed to be continuous without a gap from the display pixel Peadjacent in the X direction.

As is understood from FIGS. 84 and 88, the power supply line layer 41formed in the display area 16 is electrically connected to the uppercapacitive electrode layer CA2 via the conduction hole HC3 formed in theinsulating layer LB in each display pixel Pe. Further, the power supplyline layer 41 is electrically connected to the upper capacitiveelectrode layer CA2 via the conduction holes HC5 and HC6 formed in theinsulating layer LB in each display pixel Pe. Thus, as is understoodfrom FIGS. 84, and 86 to 88, the power supply line layer 41 iselectrically connected to the active area 10A formed in an areaconstituting the capacitive element C via the upper capacitive electrodelayer CA2, and the conduction holes HA3 and HA4 penetrating theinsulating film L0 and the insulating layer LA. Further, as isunderstood from FIGS. 84 and 88, the power supply line layer 41 iselectrically connected to the upper capacitive electrode layer CA2 viathe conduction hole HC7 formed in the insulating layer LB in eachdisplay pixel Pe. Thus, as is understood from FIGS. 84, and 86 to 88,the power supply line layer 41 is electrically connected to the activearea 10A forming the source area or the drain area of the drivingtransistor Tdr via the upper capacitive electrode layer CA2, and theconduction hole HC7 penetrating the insulating film L0 and theinsulating layer LA. That is, the upper capacitive electrode layer CA2also functions as a wiring layer that connects the source area or thedrain area of the driving transistor Tdr to the power supply line layer41. As is understood from FIGS. 84 and 88, the power supply line layer41 is electrically connected to the upper capacitive electrode layer CA4via the conduction holes HC4 and HC8 formed in the insulating layer LBin each display pixel Pe.

As is understood from FIG. 88, the scanning line 22 is electricallyconnected to the relay electrode QB2 via the conduction hole HC2 formedin the insulating layer LB in each display pixel Pe. Accordingly, as isunderstood from FIGS. 86 to 88, the scanning line 22 is electricallyconnected to the gate layer Gsl of the selection transistor Tsl via therelay electrode QB2 and the conduction hole HB1 penetrating theinsulating layer LA. The scanning line 22 extends in a straight lineshape in the X direction over the plurality of the display pixels Pe,and is electrically insulated from the upper capacitive electrode layerCA2 and the relay electrode QB4 by the insulating layer LB, as isunderstood from FIG. 94.

As is understood from FIG. 88, the control line 27 is electricallyconnected to the relay electrode QB5 via the conduction hole HC10 formedin the insulating layer LB in each display pixel Pe. Accordingly, as isunderstood from FIGS. 86 to 88, the control line 27 is electricallyconnected to the gate layer Gcmp of the compensation transistor Temp viathe relay electrode QB5 and the conduction hole HB3 penetrating theinsulating layer LA. The control line 27 extends in a straight lineshape in the X direction over the plurality of the display pixels Pe,and is electrically insulated from the upper capacitive electrode layerCA2 and the relay electrode QB4 by the insulating layer LB, as isunderstood from FIG. 94.

As is understood from FIG. 87, the relay electrode QC3 is electricallyconnected to the relay electrode QB6 via the conduction hole HC11 formedin the insulating layer LB in each display pixel Pe. Thus, as isunderstood from FIGS. 85 to 87, the relay electrode QC3 is electricallyconnected to the active area 10A of the emission control transistor Telvia the relay electrode QB6 and the conduction hole HA9 penetrating theinsulating film L0 and the insulating layer LA.

As is understood from FIG. 88, the relay electrode QC1 is electricallyconnected to the relay electrode QB3 via the conduction hole HC1 formedin the insulating layer LB in each display pixel Pe. Thus, as isunderstood from FIGS. 86 to 88, the relay electrode QC1 is electricallyconnected to the active area 10A forming the drain area or the sourcearea of the selection transistor Tsl and the compensation transistorTcmp via the relay electrode QB3, and the conduction hole HA1penetrating the insulating film L0 and the insulating layer LA.

The insulating layer LC is formed on the surface of the insulating layerLB on which the power supply line layer 41, the scanning line 22, thecontrol line 27, and the relay electrode QC1 and QC3. As is understoodfrom FIGS. 84 and 89, the signal line 26 and the relay electrode QD2 areformed from the same layer on the surface of the insulating layer LC.The signal line 26 extends in a straight line shape in the Y directionover the plurality of pixels P, and is electrically insulated from thescanning line 22, the control line 27, and the power supply line layer41 by the insulating layer LC. Specifically, the signal line 26 iselectrically connected to the relay electrode QC1 via the conductionhole HD1 formed in the insulating layer LC in each display pixel Pe, asis understood from FIGS. 88 and 89. Thus, as is understood from FIGS. 86to 89, the signal line 26 is electrically connected to the active area10A to which the selection transistor Tsl and the compensationtransistor Tcmp are connected via the relay electrode QC1, theconduction hole HC1 penetrating the insulating layer LB, the relayelectrode QB3, and the conduction hole HA1 penetrating the insulatingfilm L0 and the insulating layer LA. Further, the signal line 26 isformed to pass through positions in a layer over the relay electrodeQC1, the scanning line 22, the control line 27, and the power supplyline layer 41, extends in a direction (Y direction) of the channellength of the selection transistor Tsl, and overlaps the selectiontransistor Tsl via the scanning line 22, the control line 27, and thepower supply line layer 41 in a plan view.

As is understood from FIG. 89, the relay electrode QD2 is electricallyconnected to the relay electrode QC3 via a conduction hole HD3 formed inthe insulating layer LC in each display pixel Pe. Thus, as is understoodfrom FIGS. 86 to 89, the relay electrode QD2 is electrically connectedto the active area 10A forming the drain area or the source area of theemission control transistor Tel via the conduction hole HD3 formed inthe insulating layer LC, the relay electrode QC3, the conduction holeHC11 formed in the insulating layer LB, the relay electrode QB6, and theconduction hole HA9 penetrating the insulating film L0 and theinsulating layer LA.

As illustrated in FIG. 84, the insulating layer LD is formed on thesurface of the insulating layer LC on which the signal line 26 and therelay electrode QD2 have been formed. While the above description hasbeen focused on the display pixel Pe, the structure of the respectiveelements from the surface of the substrate 10 to the insulating layer LDis also common to the dummy pixel Pd in the peripheral area 18.

A planarization process is executed for the surface of the insulatinglayer LD. In the planarization process, a known surface processingtechnology such as chemical mechanical polishing (CMP) is optionallyadopted. The reflective layer 55 is formed on a surface of theinsulating layer LD highly planarized in the planarization process, asillustrated in FIGS. 84 and 90. The reflective layer 55 is formed of anoptically reflecting conductive material containing, for example, silveror aluminum and to a film thickness of, for example, about 100 nm. Thereflective layer 55 may be formed of an optically reflecting conductivematerial, and is arranged to cover each transistor T, each wiring, andeach relay electrode, as illustrated in FIG. 90. Therefore, there is anadvantage in that the intrusion of external light can be prevented bythe reflective layer 55, and the leakage of a current of each transistorT caused by light irradiation can be prevented.

As is understood from FIGS. 84 and 90, the reflective layer 55 iselectrically connected to the relay electrode QD2 via the conductionhole HE2 formed in the insulating layer LD in each display pixel Pe.Thus, as is understood from FIGS. 86 to 90, the reflective layer 55 iselectrically connected to the active area 10A forming the drain area orthe source area of the emission control transistor Tel via theconduction hole HE2 penetrating the insulating layer LD, the relayelectrode QD2, the conduction hole HD3 penetrating the insulating layerLC, the relay electrode QC3, the conduction hole HC11 penetrating theinsulating layer LB, the relay electrode QB6, and the conduction holeHA9 penetrating the insulating film L0 and the insulating layer LA.

As illustrated in FIG. 84, the optical path adjustment layer 60 isformed on the surface of the insulating layer LD on which the reflectivelayer 55 has been formed. The optical path adjustment layer 60 is alight transmissive film body that defines a resonance wavelength (thatis, display color) of the resonant structure of each display pixel Pe.In the pixels having the same display colors, the resonance wavelengthsof the resonant structures are substantially the same, and in the pixelshaving different display colors, the resonance wavelengths of theresonant structures are set to be different from each other.

As illustrated in FIGS. 84 and 91, the first electrode E1 of eachdisplay pixel Pe in the display area 16 is formed on a surface of theoptical path adjustment layer 60. The first electrode E1 is formed of alight transmissive conductive material such as ITO (Indium Tin Oxide).The first electrode E1 is a substantially rectangular electrode (pixelelectrode) functioning as a positive electrode of the light emittingelement 45, as described above with reference to FIG. 2. The firstelectrode E1 is electrically connected to the reflective layer 55 viathe conduction hole HF2 formed in the optical path adjustment layer 60in each display pixel Pe. Thus, as is understood from FIGS. 86 to 91,the first electrode E1 is electrically connected to the active area 10Aforming the drain area or the source area of the emission controltransistor Tel via the conduction hole HF2 penetrating the optical pathadjustment layer 60, the reflective layer 55, the conduction hole HE2penetrating the insulating layer LD, the relay electrode QD2, theconduction hole HD3 penetrating the insulating layer LC, the relayelectrode QC3, the conduction hole HC11 penetrating the insulating layerLB, the relay electrode QB6, and the conduction hole HA9 penetrating theinsulating film L0 and the insulating layer LA.

The pixel definition layer 65 is formed over the entire area of thesubstrate 10 on the surface of the optical path adjustment layer 60 onwhich the first electrode E1 has been formed, as illustrated in FIGS. 84and 92. The pixel definition layer 65 is formed of, for example, aninsulating inorganic material such as a silicon compound (typically,silicon nitride or silicon oxide). As is understood from FIG. 92, theopening 65A corresponding to each of the first electrodes E1 in thedisplay area 16 is formed in the pixel definition layer 65. An area nearan inner periphery of the opening 65A in the pixel definition layer 65overlaps the periphery of the first electrode E1. That is, the innerperiphery of the opening 65A is located on an inner side of theperiphery of the first electrode E1 in a plan view. The respectiveopenings 65A are the same in a plan shape (rectangular shape) or a size,and are arranged in a matrix shape with the same pitch in each of X andY directions. As is understood from the above description, the pixeldefinition layer 65 is formed in a grid shape in a plan view. Further,the plan shapes or the sizes of the openings 65A may be the same as oneanother when display colors are the same as one another and may bedifferent from one another when the display colors are different fromone another. Further, the pitches of the openings 65A are the same asone another when the display colors are the same as one another, and maybe different from one another when the display colors are different fromone another.

Further, although detailed description is omitted, the light emittingfunction layer 46, the second electrode E2, and the sealing body 47 arestacked on the layer over the first electrode E1, and a sealingsubstrate (not illustrated) is bonded to a surface of the substrate 10in which the respective elements have been formed, for example, using anadhesive. The sealing substrate is a light transmissive plate-shapedmember (for example, a glass substrate) for protecting each element onthe substrate 10. Further, a color filter can also be formed on thesurface of the sealing substrate or the surface of the sealing body 47for each display pixel Pe.

As described above, in the ninth embodiment, the emission controltransistor Tel as the third transistor that controls the connectionstate between the driving transistor Tdr as the first transistor and thelight emitting element 45, and the control line 28 of the emissioncontrol transistor Tel as the second control line are included. Thecontrol line 28 is formed between the power supply line layer 41 and thegate layer Gel. Therefore, with the shielding effect of the power supplyline layer 41, it is possible to suppress the influence on the controlline 28 and the gate layer Gel of the signal line 26 or the likearranged on a layer over the power supply line layer 41. Further, withthe shielding effect of the power supply line layer 41, it is alsopossible to suppress the influence of the control line 28 and the gatelayer Gel on the signal line 26. Further, as is understood from FIGS. 93and 94, the power supply line layer 41 covers the control line 28 andthe gate layer Gel with a pattern that is continuous without a gap inthe X direction, and accordingly, also functions as a light shieldingportion that shields light to the emission control transistor Tel.Further, since the signal line 26 is arranged to overlap the selectiontransistor Tsl in the plan view as is understood from FIG. 89, there isan advantage in that the pixel can be miniaturized.

Further, in the ninth embodiment, the power supply line layer 41 isformed to extend to a position for covering the control line 28 of theemission control transistor Tel and the emission control transistor Telof the display pixel Pe adjacent in the Y direction, and arranged tosurround the pixel conduction portion using an opening 53, as isunderstood from FIG. 94. Therefore, a high shielding effect for thepixel conduction portion is exhibited, and a good shielding effect forthe driving transistor Tdr and the emission control transistor Tel isexhibited.

Further, in the ninth embodiment, the compensation transistor Tcmp as afourth transistor that controls a connection state between the activearea 10A forming a source area or a drain area that is a second currentterminal and the gate of the driving transistor Tdr, and a control line27 of the compensation transistor Tcmp as a third control line areincluded, and the control line 27 is formed as the same layer as thepower supply line layer 41. Therefore, it is possible to achievesimplification of a process.

As is understood from FIGS. 84 to 91, the conduction portion between thefirst electrode E1 that is a pixel electrode and the source area or thedrain area of the emission control transistor Tel, that is, the pixelconduction portion includes the conduction hole HA9 penetrating theinsulating film L0 and the insulating layer LA, the relay electrode QB6,the conduction hole HC11 penetrating the insulating layer LB, the relayelectrode QC3, the conduction hole HD3 penetrating the insulating layerLC, the relay electrode QD2, HE2 penetrating the insulating layer LD,and the conduction hole HF2 penetrating the optical path adjustmentlayer 60. These function as a source wiring or a drain wiring of theemission control transistor Tel. That is, the conduction portion betweenthe first electrode E1 and the source area or the drain area of theemission control transistor Tel includes the source wiring or the drainwiring of the emission control transistor Tel provided through the layeron which the upper capacitive electrode layer CA2 or the like has beenformed, and the layer on which the power supply line layer 41 or thelike has been formed. Therefore, the source area or the drain area ofthe emission control transistor Tel can be connected to the firstelectrode E1 that is a pixel electrode with less resistance, as comparedto a case in which the pixel electrode extends to the layer of thesource area or the drain area of the emission control transistor Tel toachieve the conduction.

The conduction portion between the gate of the compensation transistorTcmp and the control line 27 is arranged to be shifted in the Ydirection with respect to the gate of the compensation transistor Temp,as understood from FIGS. 87 and 91. Therefore, the signal line 26 can bearranged on a layer immediately over the layer on which the control line27 has been formed without stacking an extra layer. Further, theconduction portion between the gate of the compensation transistor Tempand the control line 27 may be arranged to overlap the compensationtransistor Tcmp in a plan view, and a conduction portion among theselection transistor Tsl, the compensation transistor Tcmp, and thesignal line 26 may be shifted in a direction of the channel length ofthe compensation transistor Temp in a plan view.

As is understood from FIG. 89, since the signal line 26 is arranged tooverlap the compensation transistor Tcmp in a plan view, there is anadvantage in that the pixel can be miniaturized. Further, since aconduction portion between the signal line 26 and the compensationtransistor Tcmp can be arranged immediately under the signal line 26,conduction between the signal line 26 and the compensation transistorTcmp can be achieved with less resistance using the conduction holepenetrating the insulating layer, or the relay electrode. As a result,capability of writing to the compensation transistor Temp using thesignal line 26 is improved.

The upper capacitive electrode layer CA2 is configured to be arrangedbetween the scanning line 22 or the control line 27 and the gatepotential portion of the driving transistor Tdr. Further, the powersupply line layer 41 is configured to be arranged between the scanningline 22 or the control line 27 and the gate potential portion of thedriving transistor Tdr. Therefore, coupling between the scanning line 22or the control line 27 and the gate potential portion of the drivingtransistor Tdr is suppressed.

The upper capacitive electrode layer CA2 is configured to be arrangedbetween the conduction portion connecting the signal line 26 to theselection transistor Tsl and the gate potential portion of the drivingtransistor Tdr. Further, the power supply line layer 41 is configured tobe arranged between the conduction portion connecting the signal line 26to the selection transistor Tsl and the gate potential portion of thedriving transistor Tdr. Therefore, coupling between the conductionportion connecting the signal line 26 to the selection transistor Tsland the gate potential portion of the driving transistor Tdr issuppressed.

Further, with the same configuration as that in the first embodiment, itis possible to achieve the same effects as in the first embodimentdescribed above. Further, in the ninth embodiment, the same modificationexample as that described in the first embodiment is also applicable.For example, the electrode constituting the capacitive element may be anelectrode formed on a different layer from the power supply line layer41.

Tenth Embodiment

A tenth embodiment of the invention will be described. Further, in eachform to be illustrated below, elements having the same operation orfunction as in the first and ninth embodiments are denoted with thesigns referred to in the description of the first and secondembodiments, and each detailed description will be appropriatelyomitted.

A circuit of each display pixel Pe of the tenth embodiment is the sameas the circuit of the second embodiment, and includes a drivingtransistor Tdr, a selection transistor Tsl, a compensation transistorTcmp, and an emission control transistor Tel. A specific structure ofthe organic electroluminescent device 100 of the tenth embodiment issubstantially the same structure as the specific structure of theorganic electroluminescent device 100 of the ninth embodiment.Hereinafter, only a difference will be described for simplification.

FIG. 96 is a sectional view of the organic electroluminescent device100, and FIGS. 97 to 104 are plan views illustrating a state of thesurface of the substrate 10 in respective steps of forming respectiveelements of the organic electroluminescent device 100 for one displaypixel Pe. FIGS. 105 to 107 are plan views illustrating a state of thesurface of the substrate 10 for four display pixels Pe. A sectional viewcorresponding to a section including a line XCVI-XCVI in FIGS. 97 to 104corresponds to FIG. 96. Further, while FIGS. 97 to 107 are plan views,each element that is the same as that in FIG. 96 is conveniently hatchedin the same aspect as that in FIG. 96 from the viewpoint of facilitationof visual recognition of each element.

In the tenth embodiment, as is understood from FIGS. 99 and 105, theupper capacitive electrode layer CA2 is arranged to not only surround aformation portion of a portion of the gate conduction portion of thedriving transistor Tdr and a portion of the capacitive element C withthe opening 50, but also surround the selection transistor Tsl, thecompensation transistor Tcmp, the emission control transistor Tel, theconduction portion of the driving transistor Tdr, the compensationtransistor Temp, and the emission control transistor Tel, and the pixelconduction portion electrically connected to the source area or thedrain area of the emission control transistor Tel with the opening 54.As is understood from FIG. 105, the upper capacitive electrode layer CA2is a pattern that is continuous without a gap from the display pixels Peadjacent in X and Y directions. Conduction between the upper capacitiveelectrode layer CA2 and the power supply line layer 41 is achieved bynot only the conduction hole HC3 penetrating the insulating layer LB,but also the conduction hole HC3 penetrating the same insulating layerLB, unlike the second embodiment. Therefore, the power supply line layer41 and the upper capacitive electrode layer CA2 can be electricallyconnected in a grid shape as compared to a case of only the power supplyline layer 41. Therefore, with this configuration, it is possible tostably supply the power supply potential Vel on the high level side tothe display pixel Pe. Further, it is possible to reduce influencebetween the display pixels Pe adjacent in X and Y directions on eachtransistor and the pixel conduction portion due to a shielding effect ofthe upper capacitive electrode layer CA2. The upper capacitive electrodelayer CA2 is arranged in a position overlapping a gap from thereflective layer 55 of the display pixels Pe adjacent in X and Ydirections in a plan view. Therefore, light shielding properties foreach transistor is improved. In other words, since an end portion of thereflective layer 55 is arranged to overlap the upper capacitiveelectrode layer CA2 or the power supply line layer 41, the lighttransmitted through the adjacent reflective layer 55 is shielded by theupper capacitive electrode layer CA2 or the power supply line layer 41.Thus, a structure which it is difficult for light to reach thetransistor T is achieved.

In the third embodiment, the control line 28 of the emission controltransistor Tel is formed on the same layer as the control line 27 of thecompensation transistor Tcmp, the scanning line 22, and the power supplyline layer 41, as is understood from FIG. 100. Therefore, a process canbe simplified as compared to the second embodiment. As is understoodfrom FIGS. 97 to 101, the control line 28 of the emission controltransistor Tel is electrically connected to the gate layer Gel of theemission control transistor Tel via the conduction hole HB4 formed inthe insulating layer LA, the relay electrode QB7, and the HC2 formed inthe insulating layer LB. As is understood from FIG. 105, the powersupply line layer 41 is formed to be continuous without a gap from thedisplay pixel Pe adjacent in the Y direction and to extend to a positionfor surrounding the pixel conduction portion in the display pixel Peadjacent in the Y direction, as in the second embodiment. However, foursides of the pixel conduction portion are not surrounded, and thecontrol line 28 of the emission control transistor Tel is opened, unlikethe second embodiment. In the third embodiment, a high shielding effectof the power supply line layer 41 is also exhibited.

The upper capacitive electrode layer CA2 is configured to be arrangedbetween the scanning line 22 and any one of the control lines 27 and 28,and the gate potential portion of the driving transistor Tdr. Further,the power supply line layer 41 is configured to be arranged between thescanning line 22 and any one of the control lines 27 and 28, and thegate potential portion of the driving transistor Tdr. Therefore, thecoupling between the scanning line 22 and any one of the control lines27 and 28, and the gate potential portion of the driving transistor Tdris suppressed.

The upper capacitive electrode layer CA2 is configured to be arrangedbetween the conduction portion connecting the signal line 26 to theselection transistor Tsl and the gate potential portion of the drivingtransistor Tdr. Further, the power supply line layer 41 is configured tobe arranged between the conduction portion connecting the signal line 26to the selection transistor Tsl and the gate potential portion of thedriving transistor Tdr. Therefore, coupling between the conductionportion connecting the signal line 26 to the selection transistor Tsland the gate potential portion of the driving transistor Tdr issuppressed.

Further, with the same configuration as in the ninth embodiment, it ispossible to achieve the same effects as in the second embodimentdescribed above. Further, in the third embodiment, the same modificationexample as that described in the first embodiment is also applicable.For example, the electrode constituting the capacitive element may be anelectrode formed on a different layer from the power supply line layer41.

Modification Examples

The above embodiment may be variously modified. Hereinafter, a specificmodification aspect will be illustrated. Two or more aspects arbitrarilyselected from the following example may be appropriately combined withina range in which the aspects do not conflict with each other.

(1) While in each embodiment described above, the potential of the powersupply line layer 41 is the Vel potential which is connected to thedriving transistor Tdr, the potential of the power supply line layer 41may be another potential. In this case, the conduction hole forconnecting the power supply line layer 41 to the driving transistor Tdrcan be omitted. The power supply line layer 41 may be electricallyconnected to the mounting terminal 36 to which another power supplypotential Va is supplied, and the driving transistor Tdr or the uppercapacitive electrode layer CA2 may be electrically connected to themounting terminal 36 to which the power supply potential Vel issupplied.

(2) While in each embodiment described above, the organicelectroluminescent device 100 using the semiconductor substrate as thesubstrate 10 has been illustrated, the material of the substrate 10 isoptional. For example, a plate-shaped member such as glass or quartz canalso be used as the substrate 10. While in each embodiment describedabove, the driving circuit 30 has been arranged in the second area 14outside the first area 12 in the substrate 10, the driving circuit 30can also be arranged, for example, in the peripheral area 18. Forexample, the driving circuit 30 is arranged between the second powersupply conductor 42 and the substrate 10.

(3) The configuration of the light emitting element 45 is not limited tothe above example. For example, while in each embodiment describedabove, the configuration in which the light emitting function layer 46which generates white light is continuously formed over the plurality ofthe display pixels Pe has been illustrated, a light emitting functionlayer 46 that radiates monochromatic light having a wavelengthcorresponding to the display color of each display pixel Pe may beseparately formed in each display pixel Pe. Further, while in eachembodiment described above, the resonant structure has been formedbetween the reflective layer 55 and the second electrode E2(semi-transmissive reflective layer), for example, the power supply linelayer 41 as the first power supply conductor can be formed of areflective conductive material, and the resonant structure can be formedbetween the power supply line layer 41 (the reflective layer) and thesecond electrode E2 (semi-transmissive reflective layer). Further, thefirst electrode E1 can be formed of a reflective conductive material,and the resonant structure can be formed between the first electrode E1(the reflective layer) and the second electrode E2 (semi-transmissivereflective layer). In the configuration utilizing the first electrode E1as the reflective layer, the optical path adjustment layer 60 is formedbetween the first electrode E1 and the second electrode E2.

While in each embodiment described above, the resonance wavelength ofeach display pixel Pe has been adjusted by the optical path adjustmentlayer 60, the resonance wavelength of each display pixel Pe can also beadjusted according to a thickness of the first electrode E1 or the lightemitting function layer 46.

Further, the light emitting function layer 46 may emit light in any oneof a blue wavelength area, a green wavelength area, and a red wavelengtharea, and may emit white light. In this case, the light emittingfunction layer 46 may be provided over a plurality of pixels that are inthe display area. Further, the light emitting function layer 46 may beconfigured to perform different emission in respective red, green, andblue pixels.

(4) Although the light emitting element 45 using the organic EL materialhas been illustrated in the above-described embodiment, the invention isalso applied to a configuration in which a light emitting elementincluding a light emitting layer formed of an inorganic EL material or alight emitting element such as an LED is used. Further, while the topemission type organic electroluminescent device 100 in which light isemitted to a side opposite to the substrate 10 has been illustrated ineach embodiment described above, the invention is similarly applied to abottom emission type light emitting device in which light is emitted tothe substrate 10.

(5) While the configuration in which the dummy pixel Pd having astructure (a structure of the wire, the transistor, the capacitiveelement, or the like) similar to the display pixel Pe is arranged in theperipheral area 18 has been illustrated in each embodiment describedabove, the configuration within the peripheral area 18 is not limited tothe above example. For example, the driving circuit 30 (the scanningline driving circuit 32 or the signal line driving circuit 34) or acircuit and a wiring other than the driving circuit 30 can also bearranged on a layer under the second power supply conductor 42 in theperipheral area 18.

(6) While each embodiment described above focuses on the film thicknessof the optical path adjustment layer 60 for simplification ofdescription of the resonance wavelength, in fact, the resonancewavelength of the resonant structure is set according to a refractiveindex of each layer located between the reflective layer of the resonantstructure (for example, the first power supply conductor 41) and thesemi-transmissive reflective layer (for example, the second electrodeE2) or a phase shift in the surface of the reflective layer and thesemi-transmissive reflective layer.

(7) Any of the transistors, the capacitances, and the wirings may beomitted without departing the gist of the invention. For example, in thetenth embodiment, the compensation transistor Tcmp and the emissioncontrol transistor Tel may be omitted, and the pixel electrodeconduction portion may be the source wiring or the drain wiring of thedriving transistor Tdr. Further, for example, in the seventh embodiment,the emission control transistor Tel may be omitted, and the pixelelectrode conduction portion may be the source wiring or the drainwiring of the driving transistor Tdr. Further, when the capacitiveelement C includes two or more types of capacitive elements, any one ofthe capacitive elements may be omitted. Further, a transistor, acapacitor, a wiring, or the like other than the transistors as describedin each embodiment may be appropriately added. Further, in eachembodiment, the scanning line 22, the signal line 26, the control lines27 and 28, and the power supply line layer 41 are in a straight lineshape and their width is uniform, but the invention is not limited tothis aspect, and the width of the wiring may be greater than otherportions or may be formed to be bent.

Electronic Apparatus

The organic electroluminescent device 100 illustrated in each embodimentdescribed above is suitably used as a display device for variouselectronic apparatuses. In FIG. 108, a head-mounted display device 90(HMD: Head Mounted Display) using the organic electroluminescent device100 illustrated in each embodiment described above is illustrated as anelectronic apparatus.

A display device 90 is an electronic apparatus that can be mounted on ahead of a user, and includes a transmission portion (lens) 92L thatoverlaps a left eye of the user, a transmission portion 92R thatoverlaps a right eye of the user, an organic electroluminescent device100L and a half mirror 94L for a left eye, and an organicelectroluminescent device 100R and a half mirror 94R for a right eye.The organic electroluminescent device 100L and the organicelectroluminescent device 100R are arranged so that emitted lightstravel in opposite directions. The half mirror 94L for a left eyetransmits transmitted light of the transmission portion 92L toward theleft eye of the user, and reflects the emitted light from the organicelectroluminescent device 100L toward the left eye of the user.Similarly, the half mirror 94R for a right eye transmits transmittedlight of the transmission portion 92R toward the right eye of the user,and reflects the emitted light from the organic electroluminescentdevice 100R toward the right eye of the user. Therefore, the userperceives an image obtained by superimposing an image observed throughthe transmission portion 92L and the transmission portion 92R with adisplay image of each organic electroluminescent device 100. Further,stereoscopic images (a left-eye image and a right-eye image) to which aparallax has been applied are displayed on the organicelectroluminescent device 100L and the organic electroluminescent device100R, and thus, a stereoscopic effect of the display image can beperceived by the user.

Further, the electronic apparatus to which the organicelectroluminescent device 100 of each embodiment described above isapplied is not limited to the display device 90 of FIG. 108. Forexample, the organic electroluminescent device 100 of the invention isalso suitably used for an electronic view finder (EVF) which is used foran imaging device, such as a video camera or a still camera. Further,the light emitting device of the invention can be employed for variouselectronic apparatuses such as a mobile phone, a portable informationterminal (smart phone), a television, a monitor of a personal computeror the like, and a car navigation apparatus.

What is claimed is:
 1. An organic electroluminescent device, comprising:a first transistor having a first gate electrode and a first currentterminal; a pixel electrode electrically connected to the first currentterminal of the first transistor; a power supply line layer; and acapacitive element including a first capacitive electrode electricallyconnected to the first gate electrode of the first transistor, a secondcapacitive electrode electrically connected to the power supply linelayer, and a dielectric film disposed between the first capacitiveelectrode and the second capacitive electrode, wherein the secondcapacitive electrode is disposed between a layer on which the first gateelectrode is formed and a layer on which the first capacitive electrodeis formed.
 2. The organic electroluminescent device according to claim1, further comprising: a second transistor having a second gateelectrode and a second current terminal; a scanning line electricallyconnected to the second gate of the second transistor; and a signal lineconnected to the second current terminal of the second transistor,wherein the second capacitive electrode is disposed between a layer onwhich the first capacitive electrode is formed and a layer on which thesignal line is formed.
 3. The organic electroluminescent deviceaccording to claim 2, wherein the second capacitive electrode isdisposed between a layer on which the scanning line is formed and alayer on which the signal line is formed.
 4. The organicelectroluminescent device according to claim 2, wherein the signal lineis disposed between a layer on which the first capacitive electrode isformed and a layer on which the pixel electrode is formed.
 5. Theorganic electroluminescent device according to claim 1, furthercomprising: a plurality of conduction holes penetrating respectivelayers from a layer on which the first current terminal of the firsttransistor is formed to a layer on which the pixel electrode has beenformed, and a plurality of relay electrodes connected to the pluralityof respective conduction holes, wherein the first current terminal ofthe first transistor is connected to the pixel electrode by theplurality of conduction holes and the plurality of relay electrodes. 6.The organic electroluminescent device according to claim 1, wherein thesecond capacitive electrode is electrically connected to the powersupply line layer, and is formed on a layer under the power supply linelayer.
 7. The organic electroluminescent device according to claim 1,further comprising: a gate wiring connected to the gate of the firsttransistor, wherein the first capacitive electrode is electricallyconnected to the gate wiring and is formed on a layer under the gatewiring.
 8. The organic electroluminescent device according to claim 2,wherein the capacitive element and the second transistor are arranged tooverlap each other in a plan view.
 9. The organic electroluminescentdevice according to claim 1, wherein the capacitive element and thefirst transistor are arranged to overlap each other in a plan view. 10.The organic electroluminescent device according to claim 1, furthercomprising: a third transistor connected between the first currentterminal of the first transistor and the pixel electrode, wherein thecapacitive element and the third transistor are arranged to overlap eachother in a plan view.
 11. The organic electroluminescent deviceaccording to claim 9, further comprising: a fourth transistor having afourth current terminal connected to a connection portion with the firstcurrent terminal of the first transistor and a third current terminal ofthe third transistor, wherein the capacitive element and the fourthtransistor are arranged to overlap each other in a plan view.
 12. Anelectronic apparatus comprising the organic electroluminescent deviceaccording to claim 1.